Move over Abba, Sweden has found new fame. The small Nordic country is breaking records — in waste. Sweden's program of generating energy from garbage is wildly successful, but recently its success has also generated a surprising issue: There is simply not enough trash.
The Pentagon's research agency, known as DARPA, is challenging scientists to develop robots that can work in man-made disasters like Fukushima. The goal is to develop machines that can be easily operated immediately after disasters strike.
Social media sites, including Facebook and Twitter, have been important parts of this year's presidential campaigns. As Americans prepare to head to the polls, experts discuss social media's influence on politics, and whether Twitter can predict who will win the election.
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