Radiation left over from the Big Bang offers researchers unprecedented cosmic understanding.

An angiotensin vaccine stifles high blood pressure in an early test in people.

Roundworms, yeast, and humans share more than a dozen genes linked to aging.

The North Atlantic's Gulf Stream affects the overlying atmosphere more strongly than previously suspected.

Alligator researchers say they have discovered a new role for lungs as maneuvering aids under water.

The discovery in two South Pacific caves of bones from an extinct group of half-size humans has fueled the already heated scientific debate over the evolutionary identity of so-called hobbit remains from Indonesia.

A class of drugs being developed to block pain could obstruct memory formation as well.

The Intel Science Talent Search announced its winners at a gala dinner honoring the competition's 40 finalists.

Bloodless MRI seeks a more direct window into the working brain than conventional techniques.

Increasing carbon dioxide in the air is changing the pH of the ocean, which could mean very different communities of sea creatures.

A new analysis suggests that five different spacecraft gained more speed as they flew past Earth than can be accounted for by Einstein's theory of gravitation.

Democratic societies with market economies promote a moral ethic of cooperating with strangers who demand mutual sacrifices in joint ventures.

A material inspired by sea cucumbers morphs from rigid to soft.

An fMRI scan of the brain can tell what photograph a subject is looking at.

Amblyopia, or lazy eye, can be reversed in adults with visual task exercises.

An efficient technique to make dopamine-producing nerve cells from human embryonic stem cells could mark a step toward devising therapies for Parkinson's disease.

City living pushes for rapid evolution in the seed strategy of a little yellow flower along French sidewalks.