As negotiators were grasping for a landmark nuclear deal, they hit a roadblock over Iran's once-secret enrichment site at Fordo, a fortified bunker buried deep in a mountainside -- potentially impervious to U.S. or Israeli airstrikes.
One city banned Styrofoam. Another has the highest percentage of "clean" cars in Europe. Still another has cut greenhouse gas emissions by 29 percent since 1990 -- while its GDP grew 19 percent.
To sleep, perchance to... ward off Alzheimer's? New research suggests poor sleep may increase people's risk of Alzheimer's disease, by spurring a brain-clogging gunk that in turn further interrupts shut-eye.
Walter "Stormy" Crawford Jr., whose founding of one of North America's largest bird conservation and rehabilitation centers was fueled by a childhood spent in Venezuela fascinated by exotic jungle birds, has died in Missouri. He was 70.
The search for extraterrestrial life received a major boost Monday with the launch of an ambitious $100 million program, backed by famed physicist Stephen Hawking and tech billionaire Yuri Milner.
Hundreds of Russian scientists say companies abroad are refusing to sell them scientific equipment they need to do their work and Western publications are curtly turning down their research papers.
A tsunami threat was canceled Saturday after a strong earthquake struck the Santa Cruz Islands in the South Pacific and no damage or casualties were reported.
Federally endangered dragonflies that have been raised in a laboratory over the past several years are being released at a forest preserve this week in Illinois, where scientists believe they'll be a good match with the small population still there.
Vast frozen plains exist next door to Pluto's big, rugged mountains sculpted of ice, scientists said Friday, three days after humanity's first-ever flyby of the dwarf planet.
Claudia Alexander, a brilliant, pioneering scientist who helped direct NASA's Galileo mission to Jupiter and the international Rosetta space-exploration project, has died at age 56.
Scientists using underwater vehicles and sonar have found a shipwreck off the North Carolina coast that may date back to the American Revolution, Duke University said Friday.
People who lived near the site of the first atomic bomb test in the New Mexico desert and later developed cancer and other health problems need to be compensated, a U.S. senator said Thursday.
