Science and technology

Associated Press
From left, HTC CEO Peter Chou, Facebook CEO Mark Zuckerberg and AT&T Mobility CEO Ralph De La Vega embrace as they show joint products at Facebook headquarters in Menlo Park, Calif., Thursday, April 4, 2013. (AP Photo/Marcio Jose Sanchez)

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Astronomy, meteorology, environment, archaeology, electronics, computers and gadgets

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