News
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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.
- Chemistry
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.
- Planetary Science
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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Fly naps inspire dreams of sleep genetics
Researchers have discovered a sleep-like state in the fruit fly.
- Physics
Melting nuclei re-create Big Bang broth
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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Migration may reawaken Lyme disease
Lyme disease can hide in healthy-looking birds until the stress of migration drives it into a potentially infectious state.
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Two Meningitis Bacteria Yield Genomes
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
- Health & Medicine
Budding Tastes: Higher blood pressure in newborns links to salt preference
Babies who tolerate a salty flavor have higher blood pressure on average than their less tolerant counterparts do.
- Earth
Nature’s Own: Ocean yields gases that had seemed humanmade
Chemical analyses of seawater provide the first direct evidence that the ocean may be a significant source of certain atmospheric gases that scientists had previously assumed to be produced primarily by industrial activity.
- Astronomy
X-Ray Chaos: Violence shows itself in a nearby galaxy
New X-ray observations provide additional evidence that Centaurus A, the nearest radio-wave-emitting galaxy to Earth that has a supermassive black hole, is a maelstrom of violence.
- Earth
Killer Cocktails: Drug mixes threaten aquatic ecosystems
Trace amounts of pharmaceutical drugs in waterways may work together to deform and kill native microscopic organisms.
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Not a Turn-On: Alleged X chromosome activator may be a dud
A gene that helps regulate X chromosome activity in mice doesn't work in people.
