(AP) -- Storm science has greatly improved tornado warnings in recent years. But if that's led anyone into a sense of security, that feeling has taken a beating in recent weeks.
Earth Sciences
May 28, 2011
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Endeavour's astronauts took care of some last-minute space station chores Saturday before packing up to come home and end the next-to-last shuttle flight.
Space Exploration
May 28, 2011
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US President Barack Obama named Twitter's chief and a high-ranking Microsoft executive among a handful of technology veterans to be appointed as telecommunications security advisors.
Internet
May 28, 2011
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A debilitating drought along China's Yangtze river has affected more than 34 million people, leaving farmers and livestock without water and parching a major grain belt, according to the government.
Environment
May 28, 2011
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(AP) -- A federal judge on Friday refused to order a cut in flows from the Grand Coulee Dam that threaten millions of fish raised in pens downstream in the Columbia River.
Ecology
May 28, 2011
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