Britton Chance dies at 97; pioneer in study of ultra-fast reactions in human biology

Molecular biologist Britton Chance, who combined an expertise in electronics and automation...

Century-old oaks may make way -- for silt

On a southern-facing slope of the San Gabriel Mountains, Glen Owens strode through the dappled sunlight of century-old oaks and sycamores...

Scientists reverse some age effects in mice

Have scientists finally discovered the genetic fountain of youth? Hardly. But by creating a genetic switch that allows them to...

Exotic oarfish makes rare appearance in Malibu

The rare, ribbon-shaped sea creature was far from home when it washed ashore in Malibu this week.

Brown may find it's not easy being green

Jerry Brown ran for governor promising to revive the economy through an aggressive expansion of California's green-energy industry —...

California toxic chemical rules were watered down, environmentalists charge

A dozen environmental groups have accused Gov. Arnold Schwarzenegger's administration of caving in to pressure from business and industry by...

Newfound bacterium casts life in a new light

After days of rampant speculation that NASA was on the cusp of revealing it had detected extraterrestrial life, the reality was slightly...

Number of stars in universe may be vastly larger than thought

Here's a finding that may make some stargazers do a double-take through their telescopes: There may be three times as many stars in the...

Erasing traumatic memories may soon be possible

Soldiers haunted by scenes of war and victims scarred by violence may wish they could wipe the memories from their minds. Researchers at...

Obama administration withdraws offshore drilling plan

Citing the lessons of the BP oil spill, the Obama administration reversed course Wednesday and pulled plans to open the eastern Gulf of...

Samuel T. Cohen dies at 89; inventor of the neutron bomb

Samuel T. Cohen, the father of the controversial tactical nuclear weapon known as the neutron bomb, which was designed to kill people and...

Even a little extra weight can be detrimental

Doctors and public health officials have been admonishing us for years that it's unhealthful to carry around extra pounds. A new study...

Astronauts considered in NASA budget cuts

With NASA's budget under pressure and the space shuttle program set to retire, even the agency's most sacred cow — the 64-member...

Infrared observatory jet gets off the ground

A U.S.-German infrared observatory mounted in a jumbo jet has flown its inaugural science flight, a mission to better understand how stars...

Sacramento-San Joaquin Delta's ecological decline is breathing new life into bypass proposals

A drilling rig bit into the bed of California's biggest river, hauling up sage-green tubes of clay and sand the consistency of uncooked...