New model explains why Sirius and its companion have such an elongated orbit

Switching on a gene in neurons can alter nematodes' sexual behavior

Vaccinia virus engineered to thwart tumor cells shows promise in animals

Was the formation of the universe like making ice?

New model may explain how hot minerals got into cold comets

Fallout from racial remarks costs DNA pioneer his job

Hairlike cellular projections help transmit signals to spinal cord

New experiments support bizarre behavior of ultracold helium

In mice, genes don't need hormones to cause sex differences in behavior

A new brain-imaging study hints at how people maintain an optimistic outlook

Antioxidant extracted from a vegetable offers protection from sunburn

Genes come and go much faster in humans than in other mammals, study finds

National academies make case for sustainable growth

Growing world economy churns out more greenhouse gas than expected

New study helps explain why flu is more contagious under wintry conditions

Racial comments lead to widespread condemnation of Nobelist

Restrictions acceptable for some unclassified research, says academy panel

Panicky pachyderms sniff out threatening humans

Neandertals shared a key speech gene with humans

Blue-light-sensing proteins help keep spawning corals on time and in sync

A thin tectonic plate could explain India's forceful collision with the rest of Asia

Researchers identify brain cells responsible for rousing us from sleep

Subsistence fishing may rival threat from industrial fishing, study in Baja shows

New vaccine defends babies against the tropical killer