LOS ANGELES (AP) -- A Seattle teams has collected a $900,000 prize in a NASA-backed competition to develop the concept of an elevator to space - an idea spurred by science fiction novels....

LOS ANGELES (AP) -- A space elevator may not be rocket science but it can be just as complicated - and rewarding....

Killing or removing 25 California sea lions over the past two years has not reduced the toll on salmon at the base of Bonneville Dam in the Columbia River....

Killing or removing 25 California sea lions over the past two years has not reduced the toll on salmon at the base of Bonneville Dam in the Columbia River....

Killing or removing 25 California sea lions over the past two years has not reduced the toll on salmon at the base of Bonneville Dam in the Columbia River....

Killing or removing 25 California sea lions over the past two years has not reduced the toll on salmon at the base of Bonneville Dam in the Columbia River....

LOS ANGELES (AP) -- A space elevator may not be rocket science but it can be just as complicated - and rewarding....

LOS ANGELES (AP) -- A space elevator may not be rocket science but it can be just as complicated - and rewarding....

LOS ANGELES (AP) -- A space elevator may not be rocket science but it can be just as complicated - and rewarding....

LOS ANGELES (AP) -- A space elevator may not be rocket science but it can be just as complicated - and rewarding....

Three leading scientific organizations specializing in infectious diseases prevention issued a letter to President Obama today expressing their significant concern with current federal guidance concerning the use of personal protective equipment (PPE) by healthcare workers in treating suspected or confirmed cases of 2009 H1N1 influenza.

Obesity causes more than 100,000 incidents of cancer in the US every year, the American Institute for Cancer Research said in estimates published Friday.

The intimate and spirited quarters of a stadium offer perhaps the most ideal venues to experience an athletic event. Or do they?

A court in Norway on Friday rejected calls from the entertainment industry to force communications giant Telenor to block its customers from accessing popular file sharing website The Pirate Bay.

While only one in 10 male engineers leave their field by the time they reach their 30s, about one in four women are not working in engineering despite having completed the necessary education.

Tree-dwelling ants generally live in harmony with their arboreal hosts. But new research suggests that when they run out of space in their trees of choice, the ants can get destructive to neighboring trees.

A nonprofit group that promotes animal rights in medical research has taken issue with a NASA grant funding an assessment of the long-term effects of radiation on monkeys. The Physicians Committee for Responsible Medicine (PCRM), based in Washington, D.C., sent an appeal Thursday to NASA administrator Charles Bolden, urging that the radiobiology study, intended to test the effects of radiation encountered in long-range spaceflight, be suspended. [More]

(AP) -- The Food and Drug Administration said Friday that it has warned several companies to stop selling banned flavored cigarettes to U.S. consumers online.

BARCELONA, Spain (AP) -- After two years of tough U.N. climate talks often pitting the world's rich against the poor, negotiators said Friday a new global agreement now rides on industrial nations pledging profound emissions cuts next month in Copenhagen....

BARCELONA, Spain (AP) -- After two years of tough U.N. climate talks often pitting the world's rich against the poor, negotiators said Friday a new global agreement now rides on industrial nations pledging profound emissions cuts next month in Copenhagen....