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NEWSNOTES
SCIENCE NEWS
Electronic
Bloodhound: An "electronic nose" which can detect and identify
pathogens in the blood will cut by half the time taken for analysing blood
samples. Students at the Illinois Institute of Technology, US, have developed
the nose on the principle that microscopic organisms like e.coli bacteria
give off "signature" gases. The nose, which is an array of sensors,
detects these and relays the information to a computer which compares
the signature to those of known pathogens. The test results are out in
24 hours using this method, down from the current 48. It is still necessary
to culture the blood sample until a large enough number of pathogens builds
up.
Beam
Us Up Scotty: Scientists at the University of Aarhus in Denmark have
managed to entangle two clouds of trillions of caesium atoms, according
to a recent report in New Scientist. Events affecting one cloud would
instantaneously affect the other. This implies that faster-than-light
communication and even teleportation may be possible. The experimenters
exploited a loophole in Heisenberg's Uncertainty principle. Full entanglement
lasted only a million-billionth of a second, but the team kept up partial
entanglement for half a millisecond-ages by quantum standards.
Sex
with Strangers: The number of offspring produced by an adult animal
increases with the degree of genetic difference between its parents, say
scientists at Cambridge University. The number of grandchildren an animal
has is a measure of genetic success, so different is better. The team
used genetic markers to measure the similarity of each individual's parents,
using the principle that related animals often carry the same rare traits.
So inter-racial marriages are made in genetic heaven, officially.
HEALTH
THE INTERNET
Relief Connection
For
everything from common cold to cancer and herbal medicines to heart attack,
Indians are increasingly turning to the Internet for medical data. Logged
on, one can reach out to medics thousands of miles away and get more information
than one doctor could ever provide. Apart from instant guidance, it is
a source of reassurance to many. Sandeep Verma, 35, is a deputy general
manager with Daewoo Motors Ltd. Forced to visit a doctor after sudden
pains, he was diagnosed with gall stones and recommended surgery. Verma
was apprehensive. "I wanted to know why I had it and what options
I had," he says. He got the information from the Net.
In a society going nuclear, the web is fast
replacing grandma for practical nuggets to keep young parents on the right
side of disaster as they negotiate their way through nappy rash and teething
troubles.
The wonder web, however, is not without shortcomings.
Since the Net doesn't discriminate in the information it throws up and
the layman can't cull it selectively, it leads to unnecessary anxiety.
"Every drug has some minor side-effect. Doctors balance the pros
and cons and decide on the most effective option. Patients can't do that,"
says Sandeep Budhiraja, a general physician at Max Medcentre, Delhi.
Besides, the Internet is a hypochondriac's haven.
There's always a disease to match every ache. It encourages self-diagnosis,
sometimes with serious repercussions. The take home message: the Net can
complement, not substitute, the doctor.
Supriya Bezbaruah
ENVIRONMENT
Driving
Us Out: If present trends continue, our cities are going to become
worse places to live in. By 2025, two-thirds of the world's people will
live in cities and the worldwide vehicular population will have crossed
a billion, says a survey. Worst hit will be Asian megacities-Kolkata and
Mumbai along with Beijing and Shanghai. Up CNG, down Viagra.
Carry a Bag, Not a Carrybag: The slogan
has finally begun to make sense in Delhi with the ban on use of plastic
bags from October 2. The prohibition is only on the manufacture, sale
or use of "recycled" plastic bags. Though a step in the right
direction, this won't silence environmentalists who have been seeking
a blanket ban on plastic bags, recycled or not.
Comeback
Cat: For a country that loses one tiger a day to poaching and habitat
loss, there could not be better news-the tiger population in the Panna
Tiger Reserve in Madhya Pradesh has grown from two to three per 100 sq
km to seven to eight over the same area now. The growth is a result of
a project that looked at new management practices and monitoring methods.
Compiled by Samrat Choudhury
and Mridula Chettri Singh
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