Big meteorite chunk found in Russia's Ural Mountains

Scientists and meteorites hunters have been on a quest to find bits of rock from the asteroid exploded over the city of Chelyabinsk in Russia on February 15. More than 100 fragments have been found so far that appear to be ...

FDA wants limits on antibiotics given to animals

(AP) -- The Food and Drug Administration called on drug companies Wednesday to help limit the use of antibiotics given to farm animals, a decades-old practice that scientists say has contributed to a surge in dangerous, ...

Leaks show group's climate efforts

(AP) -- Leaked documents from a prominent conservative think tank show how it sought to teach schoolchildren skepticism about global warming and planned other behind-the-scenes tactics using millions of dollars in donations ...

11/11/11: Anthropologist debunks doomsday myths

University of Kansas anthropologist and Maya scholar John Hoopes and his students are watching predicted doomsday dates such as 11/11/11 and Dec. 21, 2012, with considerable skepticism.

Top media execs wonder how Twitter will make money

(AP) -- Major media executives are impressed with Twitter's growing popularity as a communications tool. They just can't figure out how the online messaging service is going to make money.

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