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Make Way for the New Nose
A dog's ability to detect
odors is legendary, but researchers are now developing devices that
rival Fido's nose. New electronic noses can identify spoiled food,
help diagnose medical conditions, and sniff out land mines. (Photo: John A. Rizzo/PhotoDisc)
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Scientists have sequenced all the genes of two strains
of a bacterium that causes meningitis, which may lead to the
development of a much-needed vaccine.
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Lyme disease can hide in healthy-looking birds until the
stress of migration drives it into a potentially infectious state.
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The seething primordial matter that existed in the first
microseconds after the Big Bang may have briefly reappeared in
fireballs created at a European particle accelerator.
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Researchers have discovered a sleep-like state in the
fruit fly.
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Tryst in space: Craft, asteroid rendezvous
On Valentine's Day, the NEAR spacecraft cozied up to the
asteroid 433 Eros, becoming the first craft to orbit a tiny body.
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Volcanoes aren't a big source of CFCs
Ozone-depleting chlorofluorocarbons in the atmosphere
come mainly from human-made sources, not from volcanoes as some have
suggested.
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Testosterone shows hurtful, helpful sides
A small but significant portion of men taking large
doses of testosterone experience mania, although moderate doses of the
male sex hormone show promise in boosting the mood and sex drive of
HIV-infected men.
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Pancreatic enzymes may play role in shock
Pancreatic enzymes used for digestion may cause shock
when they leach out of the small intestine and form a substance that
activates white blood cells.
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Experimenters scurry to test new theories suggesting
that extra dimensions are detectable.
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Eau, Brother!
Electronic noses provide a new sense of the future.
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A possible signal from Polar Lander
Astronomers may have heard a faint signal from the
vanished Mars Polar Lander spacecraft last month but, as of
mid-February, have not detected another.
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A chance to point Hubble
Get out your heavenly wish list: Astronomers working
with the Hubble Space Telescope are soliciting suggestions for where to
point the orbiting observatory this summer.
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Protein may help the eyes tell time
A human version of melanopsin, originally found in the
skin, eyes, and brains of frogs, has been discovered in the inner
retina and may be the long-sought photoreceptor for the human
biological clock.
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Nogo makes cord regrowth a no go
Researchers have identified the gene for a protein that
inhibits the regrowth of nerves in the spinal cord.
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Glowing bacteria gobble gook in soil
A genetically engineered bacterium lights up as it
breaks down organic contaminants in soil.
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Don't eat the pepper-flavored paint
A derivative of the spicy chemical in chili peppers
could find its way into a variety of products, including veterinary
sutures and fiber optic cables.
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