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Human Nature Sinks HIV Prevention Trial

Search-Engine Data Gives Early Warnings of Drug Side Effects

Recent Global Warming Slowed by Volcanoes

Early Treatment May Have Cured Baby's HIV Infection

Tweet, Screech, Hey: Animal Sounds Hint at Evolution of Language

Beneficial Bacteria May Protect Against Pimples

Hints of Lost Continent Found Beneath Indian Ocean

When a Calorie Is Not a Calorie

Government Not to Blame for Coal Industry Ills

New Whale Species Unearthed in California Highway Dig

Source of High-Energy Cosmic Rays Found at Last

Better Hearing Takes Practice

Pretty Useful: Appendix Evolved More Than 30 Times

Self-Assembling Molecules Offer Clues to Life's Possible Origin

Live Chat: Are We Doing Science the Right Way?

Video: Fish Neurons Fire in Real-Time as It Stalks Prey

Live Chat: The Science of Gun Violence

'Sound Maps' May Help Pigeons Navigate

Human Gait Optimized for Efficiency

Half a Million DVDs of Data Stored in Gram of DNA