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AnimalsMale spiders have safe(r) sex with siblings
In a cannibalistic species, brothers minimize risk when mating with their sisters.
By Susan Milius -
AnthropologyLice hang ancient date on first clothes
Genetic analysis puts garment origin at 190,000 years ago.
By Bruce Bower -
Health & MedicineColorectal cancer risk linked to stomach bacterium, inflammation
Stomach infection and high levels of inflammatory proteins are more common in people with colon polyps or disease, two studies show.
By Nathan Seppa -
ChemistryFrom movies you’ll love to drugs you’ll take
A new method picks out promising drug compounds by computer, in much the same way Netflix recommends DVDs to its customers.