MINI cosm
Today's science and discovery in brief |
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British? No ,you're inventing it
British inventors have dreamed up dozens of things we now take for granted
- but most of their countrymen don't appreciate their brilliance. That is
the finding of a poll on what people know about our scientific achievments.
Three-quarters did not realise cloning and jet engines began in
Britains,only a few more knew DNA and computers were pioneered here
and half did not realise a Briton built the first steam engine. The London
Science Museum,which held the poll,said the level of ignorance was "staggering". |
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SMART ALGAE: One of the great mysteries of life on Earth has
been unravelled - in a study of algae. The tiny plants are crucial in maintaining
the balance of carbon in the air and they need vitamin B12 to grow properly.
But they cannot make the vitamin themselves, and where they get it from has
baffled experts But now scientists at the Universities of Cambridge and Kent
have found some algae work with bacteria to get their supply. In return for
B12, they use sunlight to produce carbon to give to the bacteria.
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RANDY RATS: Forget Viagra - what females need to get them in
the mood is a cup of coffee, Female rats, that is. Caffeine makes the rodents
have sex more often, a study found, But don't go guzzling your cuppa just
yet - loading up on caffeine is not expected to improve
human sex
drive 'The rats had never had caffeine before,' said Fay Guarraci, of
Southwestern University in the US, said: 'In humans, it might enhance sex
only among people who are not habitual users.
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X-RAY VISION: Soldiers will soon be able to emulate Superman
and 'see' through walls, thanks to a new gadget. The home telephone-sized
Radar Scope can sense movements as slight as breathing up to 15m (50ft) away
and through 30cm (1ft) of concrete. US troops in Iraq are expected to test
out the £570 device this spring its makers believe the 700g (1.5 lb)
gadget will help soldiers prioritise which rooms to go into when they are
on a house-clearing operation.
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HEP HOPE: Anew vaccine being tested on mice may help fight
hepatitis C. The breakthrough could also help people who already have the
disease. Researchers took immune cells from mice and exposed them to a protein
in the hep C virus. The cells were then treated with a chemical that sparks
an immune response. When they put the cells back in the mice, the researchers
at Saskatchewan University found the new cells 'taught' other cells to battle
the virus.
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SOY SHOCK: Tucking into a Chinese takeaway soaked in soy sauce
could cause infertility. Scientists found genistein, contained in soy beans,
disrupts the growth of ovaries in new-born female mice. In tests,
rodents injected
with a high dose of the plant chemical became infertile, US researchers
found. More studies will show how this exposure could affect humans, said
National Institute of Environmental Health Sciences director David Schwartz.
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SNIFF TEST: Perfumes are being used to keep track of logs in
the forest. An electronic 'nose' has been developed which can keep track
of timber as it is moved around. At the moment the device can track only
one aroma at a time but Glen Murphy, a forest engineenng professor in Oregon,
hopes to be able to track up to 25 aromas within five years which would enable
him to tag more than 33million logs. 'A smell is like a fingerprint,' Prof
Murphy said.
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GOOD VIRUS: Tobacco plants are being put to a new, healthy
use - in the hunt for a cure for the bubonic plague, Scientists injected
the plants with a genetically modified version of the tobacco mosaic virus.
Instead of making the plant leaves wilt as the virus normally does, it helped
the plants produce a protein which is now to be used as a plague vaccine.
The vaccine was successfully
tested on guinea
pigs and the US scientists are now hoping to try it on humans.
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FAT FIGHTER: A way of reversing obesity has been found in a
gene called the hedgehog. The protein guides the early development of animals
and can tell cells whether to become bone or fat tissue The gene got its
name frorn the bristly, skinny appearance of
fruit flies when
they were exposed to it. When the gene was blocked the fruit flies became
fat. Eventually, US scientists hope that by activating the gene in elderly
people, it will cut fat and reduce osteoporosis.
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GREAT GUNS: A 'smart gun' that can recognise a person's grip
is close to being put on the market. A prototype of the weapon has just been
unveiled. Using sensors in its handle, the gun locks its shooting mechanism
when a hand it doesn't recognise picks it up. The feature would be useful
if a criminal or a child got hold of it. 'The way you hold a gun and curl
your fingers around is unique to everyone,' said one of the US researchers
who helped develop the gun.
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LIGHTS SHOW: A huge stream of charged particles has been seen
betweeen the Sun and the Earth. Satellites from the European Space
Agency and NASA observed the particles outside the Earth's magnetosphere,
or magnetic shield. Understanding how the particles occur could explain what
causes explosive phenomena, such as solar flares, gamma-ray bursts and
'aurora', or polar lights. The stream measuring 2.5million km, was observed
for two-and-a-half hours
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WAVE RIDERS: A group of scientists has abandoned the 1aboratory
and taken to riding out on quad bikes and jet ski's just as a storm is brewing
-all in the name of research. Experts from the univerisities of East Anglia
and Liverpool were studying the effectiveness of coastal defences and needed
to take measurements. Just before a storm to see how much damage was caused
to the beach. They used the figures in a computer model which should help
plan East Anglian sea defences.
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WAKE-UP CALL: We've had computer viruses and now it's only a
matter of time before mobile phones are wiped out in the same way. In fact,
it could happen sooner rather than later - by the end of 2007, say experts.
Security analysts Gartner forecast there will be enough smart phones, which
are capable of being infected, by that time to make the largescale passing
around of a worm or virus possible. Phone users may be sceptical about the
warning after several earlier false alarms.
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BRAIN ACHE: Have you ever wondered why you can't concentrate
on something when someone is yakking in your ear? The problem is that your
brain cannot cope with sights and sounds at the same time. One part of the
brain has to switch off I while another is switched on, researchers found.
This explains why drivers are more dangerous if they use a mobile - they
have to pay less attention to looking at the road to listen to the conversation,
the US researchers told The Journal of Neuroscience.
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AUTISM GENE: Autisrn
experts believe they are close to unlocking the key to the disease. They
are examining the link between the genetic element the condition and brain
functions to see if there are any patterns. Studies show genetics lie at
the heart of autism, but researchers in Oxford and Cambridge have had limited
success in identifying the genes responsible. They hope brain scans will
reveal how genes affect the way autistic minds process information.
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NO TICKLING: Ever wondered why you don't laugh when you tickle
yourself? It's all down to our need to be ready for the unexpected, research
shows. The brain anticipates trivial sensations, such as your own touch,
so it can focus on more important ones, such as a tarantula crawling up your
neck. Sensation is less when the brain expects it and 'combining senses with
the expected gives a picture of the outside world', researchers at University
College London said.
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LOVE'S SPARK: When it comes to telling
whether
he loves you, it's all about the sparkle in his eyes-well, at least
in the butterfly
world. Females are attracted to the 'sparkle' from eyespots on the male's
wtngs. it is actually reflected UV light and is more important in attraction
than spot size, previously thought to be the key factor 'It shows size isn't
everything in determining sexual choice,' said Dr Kendra Robertson of Buffalo
University.
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BLOOD BOOST: Blood could be useful for creating bones,scientists
claim.They think umbilical cord blood stem cells kept at Europe's blood banks
could be used to create bone structures.If their attempts are successful,the
stem cells could be used to repair bone defects and make hip replacements
more durable. The £2.5 million project at the University of York will
also study the ethics of stem cell therapies.
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STORM CLUES: A new NASA satellite is helping predict when
hurricane will become more devastating. The radar satellite is able to provide
thermal and heat data from inside a tropical storm. It can also tell when
ice particles found high up in the storm's clouds are melting at lower levels.
That is a sign the hurricane is about to become 'extra-tropical' and
release heavy rain away from the storm's centre.
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NOT AGAIN: Déjà vu is usually so brief it was
thought impossible to study. But for some the feeling is persistent. Leeds
psychologists are working with suffers of chronic déjà vu
- who may even stop watching TV news because it seems to be a
repeat. Dr Chris Moulin first encountered chronic sufferers at a clinic.
He said: 'One man said there was no point in coming because he'd already
been there - although it would have been impossible.'
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BABOON BLUES: The baboon mourns like a human,a study has
revealed. Researchers found stress hormones called glutocorticoids increased
in baboons who lost close family members.When Sylvia the baboon lost Sierra,her
closest grooming partner,she looked to friends for support, Dr Anne Engh
from the University of Pennsylvania said. 'With Sierra gone,Sylvia experienced
what could only really be described as depression.'
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SUN RISES : Construction of the world's first full-size artificial
sun is to start in China The fusion device, which aims to generate limitless,
clean. nuclear energy to offset the dearth of fossil fuels, will be built
in Hefei, Eastern China. Scientists hope to extract the chemical deuterium
from the sea and create a sun by fusing it with tritium under temperatures
of 100 million ºC.The £21 million project also involves Russia,
Japan, the US, the EU and Korea.
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WHITE
LIES: Some of our memories may be stolen from other people, reseaarch
shows. While our borrowing of memories is unintntional, it appears to be
done for selfish reasons, scientists found. People claim achievements and
misfortunes as their own but give away those involving wrong doing. 'Some
of the memories in which we play a leading role might in fact have been the
experiences of others,' researchers from the US and New Zealand wrote in
the journal Genes, Brain and Behavior.
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SPACE FILLER : The day of the spacwalk may be numbered -soon
spacecraft may be able to repair themselves. Engineers studied the way human
cuts heal and a fibre which could be used to make Spacecraft components.
When the fibre cracks, it could release a liquid resin that seals the breach.
'When we cut ourselves we don't glue ourselves together, our blood hardens
to form a seal ' said Christopher Semprimoshnig. of the European Space Agency.
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ROBODOC : Patients are being followed by a
robot which X-rays them as they
move. The aim is to produce iamges of bones, muscles and joints which
can be more useful than the static X-rays we are all used to. Scott Banks
at the University of Florida, said: 'We want to observe and measure how muscles
and joints move when people use them.' Patients wear an LED-lit patch on
the body part in question and the robot can zoom in on it.
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LET'S FACE IT: The English face is changing almost every year
and in the last six centuries it has evolved less prominent features and
larger brains. A Birmingham University team took measurements from radiographic
films of skulls dating back to the 1348 Black Death and the wreck of the
Mary Rose in 1545. They found that the mediaeval English had larger jaw bones
and smaller brain sizes. Spokesman Dr Peter Rock said: 'The differences are
striking.'
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GERM LINK : Infections could cause some forms of brain cancer,
scientists said yesterday. Clusters of glioma rumours - the most common form
of the disease - were found at the same places and at the same times in Brabant,
Holland, over 18 years A team, led by Dr Richard McNally of Newcastle University,
said people could not catch cancer but infections might trigger it in a few
people already genetically at risk, according to a report in the European
Journal of Cancer.
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LISTEN UP:
Owls could hold the
key to treating attention disorders.The birds of prey are able to 'tune in'
to a particular noise and pair that sound with what it sees.They even block
out competing noises from other directions. US neurologists wired up 12 owls
in a bid to understand how their brains process the data. By mapping out
neurotransmitters involved in signalling attention they hope to help humans
suffering from attention disorders.
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DIRT BUSTER: Plants could be used tc' clean up land contaminated
by explosives. Micro-organisms found in soil have beeri used to turn trees
into pollution-busters because they use the explosives as a source of nitrogen
for growth. The system will be used on tracts of land used for military training
contaminated by RDX, one of the most widely used explosives. 'The enzyme
helps bio-degarde the RDX.' a US researcher said.
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CUT ABOVE: Super-strong water jets could reptace surgical saws
in hospitals. The industrial water cutters used to sever under sea cables
are quicker and more accurate than existing instruments, doctors say. They
require minimal contact with a patient and can be used at room temperature,
reducing damage and blood loss. After five years of research at Edinburgh
University, scientists are looking for industrial partners to take the project
forward.
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JAB BOOST: Antibodies from
chimpanzees
could help to fix problems associated with the smallpox vaccine. In a small
minority of people, the vaccine can trigger deadly side effects. It also
fails to give instant protection, rendering it of little use in a
chemical attack. But in tests on chimpanzees, a more robust vaccine
was used, producing powerful antibodies. These might offer instant protection
and help treat side effets,say US experts.
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BIG BLOB: Mountains can form in just a few million years by
a process called "deblobbing" geologists say. This occurs when two plates
of the Earth's crust collide and the swell of a mountain range develops.
Below, in the solid portion of the upper mantle, a blob of materiel clings
to the rising swell, acting like an anchor as the mountains rise slowly.
At some point, the blob disconnects and the mountains spring upward. US experts
told Science journal.
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EAR WE GO: When you scream maybe at a winning goal - brain
cells kick in to protect your hearing from the sound of your own voice. The
cells dampen the ability of our auditory neurons to detect incoming sounds
.If you stop screaming, the signal stops and hearing returns to normal in
a process called corollary discharge. Humans also have a middle ear refiex
that protects hearing from loud sounds, experts at
Cambridge University found.
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NO SHAKING : A plane that doesn't judder or a golf club
that won't jar your hand when you hit a divot? A new material using
nanotechnology could make that a reality. By using microscopic carbon tubes
called
nanotubes,
vibration in traditional materials can be greatly reduced. This is because
nanocomposites don't have the same weight as existing polymeric materials,
say researchers from the Rensselaer Polytechnic institute in the US.
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FIN-CY THAT: There's a little bit of shark in all of us, a new
study suggests.Researchers tried to discover how the feared predators can
detect electrical signals while hunting. A network of cells in the predator's
heads gives them their sixth sense, the Florida University study found. The
cells, which are also found in human facial bones, migrate from the sharks
brains to become 'electroreceptors'.
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SMOKE ALERT: Mother's who smoke during pregnancy may cause their
children to be obese by the age of eight, a US study has found. Although
prenatal smoking is known to cause low birthweight, a survey of nearly 35,000
children also revealed it raises the risk of miscarriage and premature delivery.
By the age of eight,a child whose mother smoked has a 17 per cent greater
chance of being overweight
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SMILEY FACE : A good sense of humour really does make a
man
sexy, scientists
say. Researchers carried out tests which appear to prove that laughter is
an aphrodisiac for women. In the study,63 women were shown pictures of two
equally attractive men. Each time a photo of one of the men was shown serious
statements were presented with it. A picture of the second man
came with humourous sentences. Finally each female had to rate the men.
'Routinely,women preferred the funny guy,' said a US scientist.
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SMELLY GAS: A new test can detect trace amounts of chemical
agents in sedconds.The US system uses tiny reusable microlenses. When antibodies
on the lenses come into contact with an antigen they are set to detect
they bind,causing the lenses to swell.'The system could be used to detect
a chemical weapons attack and increase the speed of medical testing,' said
one scientist.
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QUICK TOADS: They were introduced to Australia in the 1940s
to tackle beetles ravaging sugar cane crops. But cane toads have now adapted
so well to life Down Under they are growing longer legs ro cover the larger
distances the country offers. The quickest toads have legs six per cent longer
than average, scientists in Darwin found. The toads are now colonising new
areas at a rate of 50km per year, compared with 10km per year in the 1940s.
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DOPE DIET: For dieters hoping for a magic bullet to tackle obesity
a cannabis-inspired pill may offer some hope. Weight loss drug Rimonabant
had modest success at helping people lose weight and keep it off in clinical
trials, US scientists said. The drug blocks receptors in the endocannabinoid
system, which is also affected by
marijuana.
However, the study was marred by the fact that almost half of the 3,000
volunteers did not complete the year-long tests.
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RED RUMP: We may have developed colour vision to help spot when
our partners are sexually aroused, as a blushed face is a sign we are ready
for monkey business. US scientists found that 36 primate species with the
most colour-sensitive retinas were those which expressed
sexual arousal
through their faces and reddening their hare rumps. It had been thought
we developed
colour
vision to help hunt for food. Do you have a story
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GROW'I'H PAIN: Obese peopie may be more sensitive to pain than
thin people, a study says. Obese arthritis patients were found to have a
greater physical response to electrical stimulation to their ankles. The
stimulus was applied after a 45-minute muscle relaxing exercise. 'The relaxation
procedure helped both groups,' said Charles Emery, psychology professor at
Ohio State University. 'But the obese participants had a lower threshold
for tolerating pain.'
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NOAH WAY: Flooding on the scale of the Noah's Ark story may
have led to climate change, Nasa scientists claim. A computer model reproduced
the spell of warmer weather tnat followed a huge freshwater flood in the
North Atlantic when the glaciers melted 8,200 years ago. The results have
been confirmed by ice core and tree ring data. 'We only have one example
of how the climate
reacts to changes, the past,' said researcher Gavin A Schmidt.
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SPIN CYCLE: Goalkeepers who miss a spinning ball are only
doing what comes naturally, a study shows. In tests, footballers could not
predict if a ball spinning at 600 revolutions per minute would end up in
the net on a virtual reality display. 'Spinning balls don't occur naturally.
So why would nature devise a visual system adapted to them?' said Dr Cathy
Craig from Queen's University, Belfast. Her research was inspired by a
spectacular 'banana' freekick goal by Roberto Carlos of Brazil.
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MAGIC EYE: A 'bionic eye' has been used to stimulate visual
sensation in people suffering a rare form of genetic blindness. Small electrodes
are placed on the surface of the eye and an electrical current is used to
stimulate the retina to see light. While not giving full sight, it could
enable blind people to negotiate their way across a room, scientists at the
Bionic Eye Foundation in Sydney said. It is an exciting development
for people suffering conditions such as retinitis pigmentosa, where the retina's
cells die but the optic nerve survives, a BEF spokesman said.
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QUIET DEER: Bambi could have been crying for hours but his
mother would not have known. A study on fallow deer has revealed only adult
females have distinctive calls. This means fawns can tell who their mother
is but mothers are not able to distinguish between the calls of their own
offspring and other fawns. This means the young deer have to lie silently
in the undergrowth to avoid predators and do not call until they hear their
mother return, University of Zurich researchers told The American Naturalist
journal.
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LUNG TEST: People who eat large amounts of cured meats have
a three per oent reduction in lung function compared with those who never
consume these foods, a study shows. Such a difference may have a noticeable
effect in a person with lung disease, such as bronchitis US researchers say.
In tests, participants who consumed a lot of cured meats expelled 115ml less
air per second than those who ate none. The nitrogen containing compounds
used to cure meats may attack proteins that give the lungs their elasticity,
experts suggest.
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SEE HEAR! If you ever thought some art and music fits perfectly,
there is an explanation for it. Vision and hearing are interlinked in everyone's
brains but only synaesthetes who have a rare condition in which the
two senses mingle are conscious of it new research shows. They can hear as
well as see artwork to the point where some paintings become music scientists
at University College London said.
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LEAD FUEL Roadkill has been used to track the success of cars
switching to unleaded petrol. Levels of potentially lethal lead found in
the rib bones of dead otters in 2004 were less than a quarter of those in
1992. The results are important for humans because lead can damage the central
nervous system including the brain Cardiff University scientist Dr Liz Chadwick
said.
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KILLER GEAR A serial killer's clothing can help explain the
Holocaust ,a scientist befieves.Prof Bruce Hood of the University of Bristol
tries to convince people to wear a jumper belonging to Fred West.But
even with a cash reward they won't put it on as they see it as
evil. He said it provides an insight into how we can be ruled by
superstition. And that feeling can lead to genocide as it means we can
easily dehumanise other people,he claimed.
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ROAD SENSE Children are not the only ones who need lollipop
patrols.Chimpanzees
need adults' help to cross roads built through the jungle, a study shows.
Dominant males walk ahead of their group and
evaluate
the risks before signalling to the others to cross. Other males bring
up the rear to protect females and the young. The findings which centred
on a road through a rainforest in Guinea, West Africa. are reported in the
journal Current Biology.
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LARVAE LAUGH: The larvae of blister beetles imitate the sexual
characteristics of female bees as a way of getting a free meal ticket. The
insects, found in the Californian desert, mimic female bees so well male
bees try to mate with them. They stack up on each other to look like female
bees arid emit a bee-like smell. When the male bees take them back to their
nests, the larvae feast on the bees' eggs, US scientist Leslie Saul-Gershenz
discovered.
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PURPLE PATCH: Are you feeling depressed? Well. even if you are
a non-smoker you night relieve your symptoms by wearing a nicotine patch,
experts say. In tests, depressed non-smokers who wore a patch for at least
eight days said they felt less miserable after the trial. One expert at Duke
University in the US said'. 'The same areas of the brain that are stimulated
by nicotine appear to be involved in the regulation of mood.'
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QUICK LIFE: A fish that lives fast and dies young has entered
the record books. The Australian reef pygmy goby has the shortest lifespan
of any vertebrate. The fish lives for just three-and-a-half weeks and reaches
sexual maturity in ten days. 'For small species living in areas with many
predators, evolution often favours a live fast, die young strategy,' said
a Queensland University spokesman.
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DRY PUMP: Trees have learned to survive by sucking water from
clouds. A forested area in the remote Dhofar Mountains of Oman gathers water
from ground fog during the wet season. The droplets sink into the soil and
sustain the trees when the weather is dry. Although cloud forests are not
rare. these trees are peculiar because they live in a desert, US scientists
say.
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EYE KNOW: The oldest known fossilised eyes from jawed fish are
shedding light on how eyes evolved in early vertebrates. Dr Carole
Burrow, who found the 410 million-year-old specimens in New South Wales,
used X-rays to prove that a primitive fish called a placoderm had an extra
muscle attached to its eye. It was assumed that six muscles were the norm
for all vertebrates.
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WING-CHILL: Urbanite birds find life in the city less stressful
than their country cousins. Blackbirds adapt so well to a city envronment
they have lower levels of stress hormones than rural birds. The findings
come from tests on hand-reared blackbirds tested by German ornithological
researchers. 'City life changes physiological coping mechanisms in wild animals,'
the team said.
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SPACEBUGS: it's been used as a blueprint for predicting trade
between countries and now the
laws of gravity between planets can show how insects will spread disease.
The closer and healthier two plants are, the more likely it is insects will
fly between them, carrying disease, US scientists say. This is comparable
to the attraction between planets, which is greater the closer and larger
they are.
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ROOTED: Just as wary humans hide their cash in money belts,
plants have the ability to stash away valuables when attacked, The tobacco
plant shifts life-sustaining carbon away from rapidly expanding young leaves
and into its root system when itcomes into contact with fatty acids in the
mouth of the tobacco hornworm. The mechanism allows the plant to live to
fight another day, German researchers say.
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DARK STUFF: The first direct evidence of mysterious 'dark
matter' - invisible material which makes up 22 per cent of the universe
- has been found. Observations of two colliding galaxy clusters l00million
light years away showed ordinary matter and dark matter being wrenched apart.
Dr Douglas Clowe, of Arizona University, said: 'A universe that's dominated
by dark stuff seems preposterous but this is direct proof that dark matter
exists.'
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WHALE BARK: Meet the killer whale that behaves like a parrot.
A lone whale which became separated from its pod as a juvenile learned to
bark like a sea lion, a study found. Many mammals have the ability to voluntarily
oontrol when to use a vocalisation. But this whale, and another isolated
animal, also showed a variation in the use of their normal calls compared
to their pod's repertoires. Scientists believe it may he due to the absence
of a tutor.
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CRAVINGS UP: Smokers who give up cigarettes get withdrawal
symptoms within 30 minutes, a study shows. They are angry in an hour and,
within three hours they are anxious, sad and can't concentrate. Cravings,
mood disturbances appetite increases and sleep problems peak within three
days of quitting, US researcher Thomas Brandon found. 'Quitters are not yet
in the throes of full withdrawal but are not feeling right' he added.
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SUGARY MIND: Newly diagnosed schizoperenics have more glucose
in their brains and spinal fluids than healthy people. This suggests they
use a different energy source - lactate -because glucose is not being used
effectively.Researcher Dr Elaine Holmes,of Imperial College London,
said: 'We can now spot the changes which occur before it becomes a major
problem.' There is not yet a test for schizophrenia,which affects one in
100 people.
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MEAN FEET: Wasps save their young from predators by sniffing
out their enemies' stinky feet. Aphid parasitic wasps prevent their offspring
being eaten by ladybirds by steering clear of areas contaminated by a pungent
blend of chemicals that ladybirds deposit. Scientists at Hertfordshire-based
Rothamsted Research have identified the chemicals involved and have also
shown that the smell of different ladybird species repels different parasitic
wasp species to varying degrees.
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ICE SEE: A formula has been found for how icicles form - they
grow the same way as stalactites (the ones that come from the ceiling). Icicle
growth is caused by the diffusion of heat away from the icicle by a thin
layer of water and the resulting updraft of air over the surface. This occurs
because an icicle is warmer than surrounding air, and convective heat causes
the air around it to rise, a US study shows. As it rises, it removes heat
from the water layer, some of it freezes and the icicle thickens and grows.
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WEED IT OUT: A new method has been devised for filtering poisonous
weedkiller from drinking water. Current techniques use porous carbon filters
to remove herbicides such as atrazine. However, the pores often get blocked
by other organic material. A new cartridge filter created at the University
of Illinois uses glass fibres coated with polymer resin, plus a catalyst
to activate the fibres. It can lower atrazine levels in water to three parts
per billion, the Royal Society of Chemistry reports.
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DOWN, SHEP: Dogs can be as jealous as humans and even deliberately
get between their owner and a partner during romantic moments, a study has
found. Such behaviour proves it is not just humans and chimps who experience
emotions such as jealousy, guilt, shame and pride, researchers at the University
of Portsmouth said. Dogs can develop animosity in particular when in a love
triangle' involving their carer and another person or animal, they added.
-
TOLKIEN ROT: Further doubt has been cast on claims that skeletal
remains found on an Indonesian island in 2004 were those of 'hobbits'
- a species of furry minihuman. Instead, the 90cm tall (3ft) creatures that
died out 15.000 years ago were probably ancestors of pygmies who still live
on Flores, scientists said. One specimen with an unusually small head may
have suffered from microcephaly, a disease characterised by a shrunken skull,
they added.
-
LIGHTS OUT: Exposing premature babies to artificial hospital
lighting can damage their development research suggests. It stops their
biological clock from developing properly, according to scientists who carried
out laboratory tests on baby mice. This could result in an increased risk
of mood disorders such as. depression, the US researchers warned. They suggest
keeping lighting in special care baby units to a minimum.
-
ON THE RUN: It is an issue which has divided scientists for
years, but now it has been confirmed that charging elephants are technically
running. Using motion capture technology from The Lord Of The Rings
films researchers photographed elephant leg movements up to 240 times per
second. The results showed the beasts do bounce their legs a bit like pogo
sticks. That is now widely accepted as a running style rearchers at the
University of London said.
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WAVE WARNING: we will soon be able to predict where monster
waves generated by hurricanes will strike. Nasa has developed new computer
models of how waves created by hurrlcanes;typically move around, based on
data from airplanes sent into major storms. The planes fired radar pulses
at the ocean surface and recorded how long the echoes took to bounoe back.
The technique is similar to those used by geographers to map terrain.
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DEADLY RIVALS: Just as siblings may fight over who gets the
front seat or the TV remote control, some birds fight each other for prime
position in the nest. But in their case it can actually be a matter of life
and death. Alpine swift chicks will jostle each other to get in the best
spot to receive food from their mother. However, the fights can be so fierce
in very full nests that the weaker ones are pushed out and fall to their
deaths, researchers in Glasgow and Switzerland found.
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SEXED UP: Ws official: marathon sex sessions and promiscuity
are a good thing. The only catch is you have to be a queen bee, ant,or wasp.
Honeybee queens that mated with multiple drones were shown to foster bee
hives with wider genetic variation. This meant they were much better able
to fend off a debilitating disease, US researchers reported in
The New Scientist. Lead researcher
David Tarpy said: 'Honeybee queens are hedging their bets by mating with
many males.'
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VEIN HOPE: A method of giving drugs that could help prevent
a heart attack after an angioplasty is being developed. In more than a third
of patients given a coronary angioplasty - where a tube or 'stent' is inserted
to clear a clogged artery - swellings of tissue form around the stent. The
method involves delivering the precise amount of 'prodrug' to the stent site,
Israeli researchers said. Lead scientist Noah Lotan said: 'It could also
be useful for delivering chemotherapy drugs.'.
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BRAINSTORM: It may be possible to predict the volume of water
stored in a storm doud simply by recording the amount of lightning it emits.
Using satellites a US team found it was the amount of ice inside a cloud
that determined the number of lightning bolts produced. 'Maybe we can count
lightning under a cloud and say 'Hey, I know what the rainfall will be,'
one expert told New Scientist
magazine.
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CELL OUT: A new catalyst - a substance which speeds up the
rate of a chemical reaction - has been created by Japanese scientists. Immune
system cells that usually fight infection were altered so that, instead of
seeking out invading viruses or bacteria. their antibodies targeted a compound
of the metal rhodium, the Royal Society of Chemistry reported yesterday.
-
GEMINI GENE: Multiple sclerosis can be affected by a pair of
'angel and devil' genes that fight to make a patient healthy or ill. While
the DR2b gene increases a rogue immune response, its partner gene DR2a tries
to stop the damage. This may be why some patients are more affected by the
immune system disease than others, Oxford University researchers told
Nature journal.
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LEAP UP mechanical leg that can jump is being hailed as a first
in the world of robotics. The
1m device made by Toyota can clear the ground by as much as 4cm by bending
and stretching its toe joint and another knee-like joint. The invention will
help robots run faster and negotiate unpaved roads more easily. 'The technology
can be applied to two- legged machines in future,' said a spokesman for Toyota.
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GAS VICTORY: The threat posed by chemical weapons has been
reduced, after scientists found a way to detect Sarin gas. Experts have
identf'ied a molecule which can be manipulated to flash up a fluorescent
warning in milliseconds when it senses the deadly gas, the Royal Society
of Chemistry roported. Sarin is a colourless, odourless gas which attacks
the central rervous system. It was used in the Tokyo subway attacks of 1995.
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SUN SPOT: Changes in the Sun's brightness have little effect
on the Earth's climate, new research has found. Data from the last millennium
show that variations in the Sun's energy output were the result of dark sunspots
and bright points called faculae, which do not significantly change the Earth's
temperature. The research in the journal
Nature says this destroys the arguments
of critics of the greenhouse gas explanation for global warming.
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SCIENCE OF ART: Ever wondered what happens in
the brain of an artist?
Neuroarthistory might have the answer claims an art historian Prof John Onians,
of East Anglia University, says the brain-scanning techniques explain why
Florentine painters used more line and Venetian painters more colour. The
reason is exposure to different environments causes different visual preferences.
Prof Onians said: 'We are unlocking the door to a secret world.'
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AGEING ROCK: Even asteroids show signs of getting old - they
get wrinkles. Their patchy surfaces in different stages of ageing, known
as space weathering, help tell them apart from meteorites found on Earth.
It is thought this process makes asteroids gradually darker and redder than
the rocks chipped off them long ago. The differences in appearance are due
to varying amounts of iron, researcher Takahiro Hiroi told
Nature journal.
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PURE FISH: Fish farms can be freed of infection - thanks to
a cheap and environmentally friendly system for cleaning polluted water.
By adding porphyrin and light, oxygen species are created which attack disease-
causing micro-organisms. The technique was developed to stop fungal infections
in trout farms, Researcher Dr Michela Magaraggia told the Royal Society of
Chemistry: It may be expanded to treat irrigation or drinking water"
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BEHIND YOU: A perfectly sane patient thought a real -life shadow
was standing behind her when there was nobody there. The young woman, who
was being tested for epilepsy,
also felt a figure hugging her when asked to clasp her own knees. Doctors
had stimulated an area of her brain called the left temporoparietal junction.
They believe the patient's reaction may help explain feelings of schizophrenia
and even alien
abduction, Nature reported.
-
TWEETIE PIE: Girls look away - some mothers really do prefer
their sons. A louse finch will protect her future sons from an infestation
or blood-sucking mites by juggling the birth order of her offspring, US
scientists say. She first lays eggs bearing daughters, because those eggs
are usually more resistant to mites, and saves her sons till last. This means
her vulnerable male chicks spend less time with the mites in the nest so
have a better chance of surviving.
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SUN SIGNS: A spacecraft will blast off to the Sun tomorrow
to help scientists understand more about its immensely powerful magnetic
field. The Japanese Solar-B craft will measure the strength of the field,
which is capable of triggering massive solar eruptions These eruptions hurl
huge clouds of plasma into space which are powerful enough to cause malor
disturbances to Earth's magnetic field, including knocking out power systems.
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STAR STRUCK: Cosmic contraceptives preventing the birth of
new stars may have been found by an international team of astronomers. Most
stars in large galaxies were born when the universe was in its infancy and
since then only a handful have been born every year. One suggestion for this
is that black
holes release energy to dilute the gas from which stars are made. Prof
Pieter van Dokkum of Yale said: 'Galaxies seem to have a very effective method
of birth control.'
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BY A WHISKER: A more efficient way to clone mice has been found
that could lead to the generation of tissue or organ transplants. In 1997
Dolly the sheep was the first animal cloned from an adult cell, but some
scientists say she was actually created from young stem cells by accident
- the failure of. most attempts using old cells points to this. But scientists
at Pittsburgh University used blood cells from stem stage to maturity. Only
the mature stage produced babies.
-
SHOP ADDICT: It isn't just women who are hooked on shopping,
men suffer just as badly, too. In a study of 2,513 adults, six per cent of
women and 5.5 per cent of men showed signs of binge buying. Sufferers often
rack up huge debts and lie about their purchases. Experts said the results
were surprising as earlier studies suggested 90 per cent of addicts were
women. 'The widespread opinion that most compulsive buyers are women may
be wrong,' they wrote.
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CHECK OUT: Hotel guests with colds leave their germs on light
switches and TV remote controls for a day after they check out. Sufferers
spent a night in a hotel room, for the study. They had no visitors and were
asked to wash their hands only after using the bathroom. After checkout
participants were asked to name items they had touched. 'To my surprise nearly
everything was contaminated,' said an expert from the University of Virginia.
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SMOKED OUT: A new way to make it as easy for women to quit
smoking as men has been unveiled. Using the pleasure-blocking substance
naltrexone alongside nicotine patches boosted success rates in women giving
up smoking by alrnost 50 per cent. However, it made
no difference
to men. Women have histoncally had less success than men in giving up
the habit but this study shows naltrexone closes the gap,' said researcher
Andrea King, from Chicago University.
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PIXEL PERFECT: Scientists found a way to create photographs
using
just
one pixel. The technique involves focusing an image on to tiny micrornirrors,
which will produce a random pattern of bright spots. Their combined intensity
is then recorded by the single pixel.
-
IT'S A GAS: The green car of the future has moved a step closer
- after scientists found a new way of storing and releasing hydrogen. They
added magnesium to zeolite, a naturally occurring mineral which can be made
synthetically. The modified zeolite then released the gas at a rate which
would allow drivers to maintain a steady speed if it was ever used as car
fuel, the Royal Society of Chemistry reported.
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YEAH BABY: Austin Powers shouldn't have worried about losing
his mojo while he was cryogenically frozen.
Sperm taken
from mice who have been frozen for 15 years have fathered healthy offspring,
a study has found. One in five female mice undergoing IVF with the extracted
sperm produced healthy babies. The Japanese study offers hope to scientists
trying to bring extinct animals back from the dead.
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LOVE BIRDS: Opposites really do attract - if you're a
cockatiel. When the monogamous birds look for a mate
they choose one with an opposite personality. Biologist Rebecca Fox used
45 adjectives - including 'gentle', 'bold', 'agreeable' 'feisty' and 'selfIsh'
- to descrihe 20 cockatiels, When they were all put in together, the cockatiels
sought out their opposites, she wrote in
New Scientist magazine.
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NEW LAW: One of the fundamental laws of nature which
has held good for 200 years is being challengeed by a physics enthusiast.
The law of conservation of energy states that nothing can be created or
destroyed, it can only be transformed however, part time physicist Gregor
Bayer believes new stuff can be created in black holes. The American's theory
has been ridiculed but was published in journal New Astronomy after
being approved by a leading astrophysicist.
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FINE SIGHT: They may be black and white but giant pandas see
in colour scientists believe. Although their vision is not brilliant the
animals can differentiate between colours and various shades of grey. It
had been thought that their visions was just black and white because they
have such excellent senses of smell and hearing. Pandas could differentiate
better between red and grey than green and grey in a series of
tests by scientists at Zoo Atlanta in Georgia.
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SKIN DEEP: A banana looks yellow because that's what our brains
tell us. Our perception of colour depends not only on its pigmentation but
also our knowledge of what it is supposed to look like researchers claim
in journal Nature Neuroscience. People were asked to alter images of fruit
to make them appear to lack colour in a test by German Scientists Their
preconception of the fruits colour affected how they changed them the tests
revealed.
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BRAIN POWER: There is a new weapon in the fight to help people
recover fom serious brain injuries - a female sex hormone.More patients with
traumatic brain injuries (TBI) who were given progesterone survived
than those given a plabebo in medical tests. Progesterone 'exerts effects
on damaged brain tissue', said Dr David Wright, who led the research
in Atlanta, Georgia. TBIs are often caused by falls or car crashes.
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RADIO REVAMP: Antennas 'painted' on to airships could be used
for espionage and communications. The 'paint on' antennals sucessfully
transmitted voice and data calls dunng test flights in Nevada. Experts say
high altitude airships could be used for both defence and homeland security,
including surveillance of battlefields, borders and ports. They are cheaper
than satellites but can still operate above commercial air traffic and the
jet stream, and are beyond the range of most ground-to-air missiles, says
no-profit research group RTI, based in North Carolina .
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TICK TOCK: The world's most accurate clock has been created
using a singie atom of mercury .It measures the oscillations of an electrically
charged mercury atom held in an ultra cold electromagretic trap. It produces
'ticks at optical frequencies much higher than the microwave frequencies
measured in caesium atorns in America's most accurate clock the NIST-F1 at
the US National institute of Standards and Technoloigy. Physicists say
it could measure the speed of light and, if run continuously, would neither
gain or lose a second in 400million years.
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BEAK TWEAKED: Finches which inspired
Darwin's theory
of evolutlon are helping to confirm it -by evolving. Faced with
competihon from larger ground finches which flew in 20 years ago, the native
finches of the Galapagos Islands
have developed smaller beaks for eating seed. Their ancestors with larger
beaks died out because they could not compete with their new rivals. Prof
Peter Grant, of Princeton University, said this proved that the rate of
evolutlonary change accelerates in species which is faced with a threat to
its survival.
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EERIE ERIE: For years it has been dismissed as an illusion
but now experts say it has a basis in science. People living in Cleveland,
Ohio, have claimed that when the whether is right they can see across Lake
Erie and spot buildings 80km away in Canada. Physicists said the mirages
happen when a layer of cold air over the lake is topped by layers of warm
air. This causes light filtering through the layers to bend,creating an illusion
of objects in the distance.
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ECO-BRICKS: Bricks made from waste ash produced by power stations
could provide a green alternative to normal ones, it is claimed. An Australian
team said it has found a way to recycle the huge amounts of ash from coal-burning
power plants. The bricks are made entirely from ash,creating an
eco-friendly material that cuts costs for builders. The
bricks are 28 per cent lighter and 24 per cent stronger
than clay bricks. The ash can also be turned into concrete.
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PECKING ORDER: A male dog will whine and beg in deference to
a stronger dog but drop its tone to a guttural growl if it feels superior.
And men subconsciously do a similar thing. Why? To impress the ladies, of
course. The lower the pitch of a man's voice the stronger other men think
he is. And men raise it when speaking to someone they think is more dominant
according to research by the University of Pittsburgh In Pennsylvania.
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BIG DISCOVERY. They are the biggest things in the universe...
literally. Gigantic filaments stretch across 200miillon light years and contain
30 concentrations of gas, each of which contains ten times the cass of the
Milky way.The vast clouds are thought to have given birth to the universe's
biggest galaxies. They were spotted by astronomers on Hawaii studying a section
of the sky 12 billion light years
from Earth.
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DOWN, SHEP: Dogs can be as jealous as humans and even deliberately
get between their owner and a partner during romantic moments, a study has
found Such behaviour proves it is not just humans
and chimps who experience emotions such as jealousy guilt, shame and pride,
researchers at the University of Portsmouth said Dogs can develop animosity
in particular when in a love triangle involving their carer and another person
or animal they added.
-
TOLKIEN ROT: Further doubt has been cast on claims that
skeletal remains found on an Indonesian island in 2004 were those of
'hobbits'
a species of furry mini-human. Instead, the 90cm tall (3ft) creatures that
died out 15,000 years ago were probably ancestors of pygmies who still live
on Flores, scientists said. One specimen with an unusually small head may
have suffered from microcephaly a disease characterised by a shrunken skull
they added
-
LIGHTS OUT: Exposing premature babies to artificial hospital
lighting can damage their development research suggests. It stops their
biological clock from developing properly, according to scientists who carried
out laboratory tests on baby mice This could result in an increased risk
of mood disorders, such as depression, the US researchers warned. They suggest
keeping lighting in special care baby units to a minimum.
-
ON THE RUN: It is an issue which has divided scientists for
years, but now it has been confirmed that charging elephants are technically
running. Using motion capture technology from The Lord Of The Rings films,
researchers photographed elephant leg movements up to 240 times per second.
The results showed the beasts do bounce their legs - a bit like pogo sticks.
That is now widely accepted as a running style, researchers at the University
of London said.
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SLEEP TIGHT: The reason some animals wake up briefly while
hibernating may be an evolutionary mechanism to fight infection. Many
warm-blooded animals slip into a sleepilke state to get them through winters
when food is scarce and they need to stay warm - but their immune systems
go into sleep mode too.'Animals cannot tell when they need to wake
up or if they are infected,' said Angela Luis of Penn State University.
'Production of antibodies and white blood cells is stopped.'
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CRUNCH TIME: Australia was on walkabout until 1.6billion
years ago - because the continent was still split into separate chunks. 'If
you looked south from Alice Springs,you would have seen an ocean,'
said Kate Selway, a PHD student at Adelaide Untversity. She measured the
electrical conductity of the Earth to depths of hundreds of kilometres to
calculate when the northern and central Australian land masses eventually
joined together.
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POT HEAD: The same part of the brain which responds to marijuana
provides 'onn demand' protection against seizures. The endocannabinoid system
might be a target for developing drugs which could reduce or prevent seizures
in disorders such as epilepsy a study suggests. Researchers at the Queen
Mary University of London found part of the brain called the h~m~ has neurons
where oann~bis recepthrs become hyperactive during sei~ures.
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HIV HOPE: HIV sufferers are being given new hope after
a breakthrough by US scientists. Sufferers had key immune cells removed
from their blood. The 'helper T-cells' were 'trained to recognise' the virus
before being injected back into the bloodstream to kill infected cells,
New Scientist reported. Previous
attempts to find a cure failed because the virus can hide from the Imrnune
system.
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ROBO SPHERE: A new type of
robot moves by balancing on
a ball rather than using legs or wheels. The Ballbot can negotiate difficult
terrain, that may be beyond other robots inventor and Carnegie Mellon University
robotics expert Prof Ralph Hollis said: 'We wanted to create a robot that
can manoeuvre easily. It is omnidirectional. It can move easily in any direction
without having to turn first.'
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WILD WORDS: Areas where there is the highest concentration of
flora and fauna are also the areas where people speak the most languages.
Non- profit organisation Terralingua found places renowned for their wildife
-such as the Amazon and New Guinea - were the places where the tribes had
the most dialects. Half the world's 7,000 languages were also endangered,
the study found.
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SEA LIFE: Life on Earth began in the ocean and not on the planet's
surface, scientists claim. Conditions on the surface 4billion years ago,
such as volcanic eruptions and meteorite impacts, would have stopped life
emerging. But these helped regulate the temperature at the bottom of the
ocean to a more favourable 20-50°C. French researcher
Dr Isabelle Daniel told the Royal Society of Chemistry she was sceptical
this could be proven.
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RED SPOT: An Earth-sized storm on Jupiter is growing more powerful,
experts say. The storm appears as a Little Red Spot on Nasa's Hubble Space
Telescope. The storm has been building for decade, resulting in winds of
up to 650kph (400mph). ln 2005 it appeared as a white spot but changed colour
as it intensified. Despite its intensity, it pales into insignificance compared
with the Great Red Spot, which is three times its size.
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HANDS FREE: A boy has been taught how to play a game of Space
Invaders using the power of thought alone. The 14-year old mastered
the first two levels of play, using just his imagination, when engineers
from Washirgton University hooked up the Atari software to react to his brain
pulses. The experiment could prove to be a breakthrough in helping disabled
people control prosthetic limbs purely by thinking about it.
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IVF DISCOVERY: Trying to conceive through IVF can be a
heartbreaking experience - only a third ofwomen actually fall pregnant. But
now mothers-to-be could be given a genetic test to determine whether the
treatment is likely to be successful. Experts have identified a gene - the
progesterone receptor - that affects a woman's chances of conceiving. The
research could also help prevent multiple births, the journal
Nature reported.
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BONE CURE: 'Magic bullet' compounds are being developed to fight
bone diseases and help patients recover. Researchers found human proteins
can be combined with bispeosphonates to target specific conditions such as
osteoporosis. A team at Alberta University, Canada, is developing drugs to
deliver the compounds in active form direct to a patient's bones and not
the organs. The study was reported by the Royal Society of Chemistry.
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METALLICA: Ever thought why your hands smell of metal after
you touch metallic objects? It is not the metal at all but your own body
odour. Chemists at Leipzig University in Germany found that acids naturally
present in sweat react with carbon and phosphorus impurities in iron. This
creates smelly molecules called organophosphines which rnay explain why water
often tastes metallic, Nature journal
reports in its latest edition.
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FAULTY GENE: A defective gene could trigger inflammatory bowel
disease (IBD), research suggests. The DNA of 500 people with Crohn's disease
and 500 healthy volunteers was examined by scientists. They found people
had different variants of the gene IL23R which controls inflammation. The
mutation could determine if a person is at risk of getting IBD, it was reported
in the journal Science.
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SWAN ABOUT: An icy comet that is 320,000km wide and full of
poisonous cyanide gas will be visible with the naked eye tonight. Comet Swan
can be seen above the rooftops in the western sky for the next fortnight.
But it will appear only as a small, bright smudge to the naked eye. Those
with telescopes can see its green tinge as it flies l49million km (92.5million
miles) away.
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HIGH AND DRY: Thirty per cent of the world's land surface could
be hit by drought by the end of the century because of the rise in greenhouse
gases, scientists say. The first global projections predict that areas under
extreme drought could increase from the current three per cent. Experts at
Hadley Centre for Climate Change also calculate that by 2100 half the
Earth could lie influenced by moderate drought at any one time up frorn the
current 20 per cent.
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EYE EYE: A chemical found in car exhaust systems could provide
a treatment for eye disease. Cerium oxide nanoparticles can be used to protect
the retina against exposure to damaging levels of light. The compound neutralises
the effect of chemicals called reactive oxygen intermediates, which cause
cells in the eye to die. The particles could also be used to treat degenerative
diseases like Alzheimer's, said journal Nature Nanotechnology.
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DEEP DOWN: Calling all Beatles fans! You could spend a week
on a yellow submarine (or one of any other colour) breathing the same air
without suffering any ill effects. Tests by Swedish students revealed that
hazardous airborne compounds did not build up over a submersion period of
eight days. Sophisticated systems will allow the air to remain acceptable
for even longer periods under water. the Royal Society of Chemistry's Journal
of Enviromental Monitoring found.
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JET LAGGED FLY: If you feel out of sync now the clocks have
gone back it could be that you feel jet lagged on a molecular level, German
professor RaIf Stanewsky has discovered that the body clock of a species
of fruit fly is
affected by two proteins nicknamed Timeless and Jet Lag which influence the
flies' sensitivity to light. It was already known that the body clock of
humans is similar to that of flies, so our timekeeping may be influenced
in the same way.
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TESTING TIME: A new form of contraception has been developed
that involves 'ungluing'
sperm in the
testicles. A study found rats can be made infertile by targeting sperm inside
their testes. C Yan Cheng and his US team discovered that sertoli 'nurse'
cells adhere to the sperm. If this adhesion is reduced, it can cause infertility.
The technique worked so well on rats it may now be tried on men, said the
study in the journal Nature Medicine.
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EMU-LATE: Emus can provide a clue to how two -legged Jurassic
dinosaurs travelled along the prehistoric landscape. Unlike computer simulations,
live emus can show how the dinosaurs actually moved, say researchers from
the University of Wyoming. Emus look around as they walk, and cross one leg
over the other, leaving tracks similar to the l65million year-old marks found
at Red Gulch in northern Wyoming. It is believed the tracks belong to man-
sized, meat-eating dinosaurs that walked in groups.
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WATER TRAIN: Tests have begun on a environmentally friendly
train that emits only clear water, .The new trains is the world's
first fuel cell hybrid. It runs on a combination of hydrogen and battery
power,as well as two 65kilowatt fuel cells.The train can reach
sppeds of up to 100kph and can travel for up to 100km before it
needs a hydrogen refill. It was designed by a Japanese rail company
which hopes the technology will be in widespreed use in ten to 20 years.
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RAT RACE: Being timid can give you cancer especially if you
are a rat, a study shows. Scientists measured how far 81 young female rodents
of a type known to develop breast and pituitary tumours were willing to walk
into a new nonthreatening environment. By middle age, 80 per cent of tie
timid rats had developed cancer, compared with just 38 per cent of their
more confident siblings. 'The differences are striking,' said a scientist
at the University of Chicago.
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ALL'S SWELL: As you sniffle through another miserable day at
the office with a stinking cold remember, being ill is good for you. Developing
a fever gives the immune system a boost scientists have found. By increasing
the internal temperature of mice, they discovered the number of immune cells
sent to the lymph nodes to destroy foreign bodies rose, 8 report in Nature
Iminunology revealed. This is why, in illnesses such as mumps, the lymph
nodes swell as the number of immune cells increases.
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IVF HOPE: A microchip that can measure the breath of tiny embryos
could revolutionise IVF treatment for couples. The device has been used to
monitor the oiygen used by mouse embryos at the earliest stages of development.
Scientists hope the chip will be able to check the health of embryos during
IVF, when eggs are extracted and fertilised outside the body, says the Royal
Society of Chemistry journal. IVF is currently often unsuccessful.
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MIND SHOCK: Electrodes stuck to the scalp during sleep may
help students with revision, research shows. Mild stimulation boosted volunteers'
memory, enhancing a phase of sleep previously linked with word memory. Students
in Germany were asked to memorise words and then given treatment to enhance
'slow wave' sleep. Their rate of recall increased by t3 per cent after sleep
- more than three times that of volunteers given a sham procedure.
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SPY CLASS: The secret formula for an invisible ink used by
the old East German secret police has been unravelled by academics. The once
classified potion used by the Stasi was made by researchers at Michigan State
University as a way of teaching their students a mix of chemistry and history.
The academics pieced together the formula after stumbling across it in
declassified Stasi files. Students were taught the basics and then asked
to decode the message.
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NASTY BITE: Killer spiders use the same scare tactics to ward
off predators as chilli peppers. A team fnom the University of California
isolated three proteins from the venom of the West Indian tarantula
Psalmopoeus cambridgei that cause pain. The team, whose findings are published
in Nature, found the proteins activate the same chemical as capsaicin, the
hot component in chilli peppers, indicating spiders share the same method
of warding off predators.
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HANDY TIP: Good news for tired parents - research shows that
massage helps newborn babies sleep more,cry less and have lower stress
levels. Nine massage studies covering 598 babies uner six months old were
studied by researchers from Warwick Medical School and the Institute
of Education at the University of Warwick.They found massage also
improved relationships between babies and mothers with postnatal depression.
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HAIRY GENE: A complete blueprint of Neanderthal DNA should
be completed in two years experts say. By studying the DNA of 38,000 year
old fossils, German scientists have been able to get a greater understanding
of the way intelligent
humans
evolved. Early findings suggest Neanderthal and human DNA split about
500,000 years ago. It also supports the theory there was no largescale
interbreeding between the two Nature journal reports.
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GOOD GRID: The first map of the worlds most powerful computer
grids is to be unveiled this week. Nine of the largest grids are featured
in the display at the supercomputing festival in Tampa Florida. The map uses
Google Earth to pinpoint more than 300 sites on six continents. Grids are
made up of hundreds or thousands of PCs linked together to create a
supercomputer. They are vital for scientists who need extra computing power
to process large amounts of data.
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STEEL STRONG:
Carbon
nanotubes those superstrong darlings of modern researchers - are anything
but new. They were first developed by medieval
Muslim swordsmiths fighting the Crusaders.
Their Damascus blades were fashioned from a primitive steel-forging process
which inadvertently created nanotubes and iron Carbide nanowires German
researchers reported in the journal Nature.
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WINGING IT: A chicken has regrown its own wing in a scientific
first. The development suggests all animals, even humans, may be able to
regenerate lost body parts. Vertebrate regeneration is possible when the
socalled Wnt signalling system is activated. Study leader Juan Carlos lzpisua
Belmonte of the US said: 'By changing a few genes, you can enable vertebrates
to regenerate their limbs, rebuild blood vessels, bone, muscles and skin.'
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APE SNIFF: Monkeys have started weanng perfume. Spider monkeys
have been spotted rubbing themselves with chewed up leaves which German
scientists believe act as perfumes. They use three types of leaves, including
wild celery, which 'Spread an intensive and aromatic odour when crushed'.
The scents are thought to help the monkeys communicate, signai social status
and Increase sexual attractiveness.
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DRUG R~K: The reason why cannabis messes with the memory has
been unravelled for the first time. The active ingredient in marijuana -
tetrahydrocannabinoid or THO - was found by scientists to interfere with
the synchronised activity between neurons in the part of rats' brains known
to be important for memory. Animals performed less well in standard memory
tests, an article in Nature Neuroscience journal said.
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MIND TASK: A machine that can be powered by the mind has been
successfully tested. Users can use the power of thought to turn switches
on and off. It uses an infrared light to map concentration of blood in the
brain and translate changes involving brain activity Into voitage signals.
In tests by Hitachi, users activated the power switch of a model train by
performing mental arithmetic and reciting tasks.
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You can't draw a square with one hand and a circle with the
other unless you
switch
off your brain first, a US study suggests. Touch rather than brain power
is the key to muiti- task actions like rubbing your stomach while patting
your head. The discovery could help people with poor co-ordination, said
Prof. David Rosenbaum, of Penn State University. He added people should rely
on the sense of touch instead of asking the mind to go back and forwards
between different tasks.
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TINIEST CUP: It may only be good for serving drinks to fleas
but the world's smallest cup has been created. It was made during research
in India Into ultra-small containers which are vital to many modern nanoparticle
research projects. The cups can hold a femto liter One quadrillionth of a
litre. The hope is that they can be used as inkwells for ultra-small particles.
The molten metal cups were made by blasting solutions with a laser beam in
a vacuum.
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BRAIN SPUN: Fine silicone threads that contain living human
brain cells have been created by scientists using a process called
electrospinning. The development which the team at University College London
says was once thought impossible, could have a host of medical and bioengineenng
applications. Among aspects of the process yet to be studied are how the
spinning process affects the biological properties of the cells over the
long term
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WHALE TALES: It may not be language as we know it but whales
have no shortage of ways to make themselves understood. Some 622 separate
sounds made by humpback whales have been identified by experts at Queensland
University, Australia. Their 'language' includes 'wops' rnade by females,
'thwops' made by males, 'yaps' made when pods split and high-pitched cries
that seem to express anger. They also communicate using body language.
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DRUG TEST: Athletes who take the drug synacthen could soon
be caught out by a blood test that is 10million times more sensitive than
the current ones. When injected, synacthen stimulates the body to make natural
steroid hormones which boost strength and stamina. Now a test has been developed
that can find tiny traces of the chemical in human blood protein. Dr Mano
Thevis of Cologne said it means athletes will no longer be able to cheat.
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HEAD ON: Brain injury can happen within a millisecond of a
head smashing into a windscreen in a car accident. This means the injury
occurs before the head moves back after impact. Researchers in New Mexico
University and Sandia National Laboratories in Albuquerque made the finding
after modelling early- time wave interactions in the head after impact. 'We
wondered why people with similar head injuries have different outcomes,'
said Paul Taylor of Sandia.
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