News
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Treatment enigma for disturbed kids
Two new studies offer conflicting views of the effectiveness of mental-health services for children and teenagers.
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Survey raises issue of isolated Web users
A controversial study suggests that heavy users of the Internet become socially isolated.
- Astronomy
Votes cast for and against the WIMP factor
Physicists this week duked it out over a bunch of WIMPs, elementary particles that—if they exist—could solve a decades-old mystery in cosmology and help unify the four fundamental forces of nature.
- Chemistry
Power plants: Algae churn out hydrogen
Green algae can produce hydrogen, a clean-burning fuel that could one day power pollution-free cars.
