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The Gulf of Mexico's so-called dead zone off the coasts of Louisiana and Texas could be the largest ever, Louisiana scientists said Tuesday. More
The U.S. strategy of paying former Iraqi insurgents to join tribal militias and work to improve security -- which many experts credit with reducing violence in the war-battered country -- is being fatally hamstrung by the unwillingness of the central gove More
Boeing has won a new $36 million U.S. Army contract to push ahead with its work on creating a new mobile, high-energy laser weapon system to knock out incoming rockets, artillery shells and mortar rounds. More
Expect more military flare-ups in the former Soviet republic of Georgia soon, despite the French-brokered cease-fire that took effect last week. More
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U.S. teens become more sedentary as they get older, with fewer than one-third meeting recommended physical activity guidelines at age 15, researchers say. More