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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.
