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Your brain may appear like a 1.4kg lump of soft tofu but test yourself on what it can (and can’t) do with Clive Gifford’s mind baffling puzzles, spatial intelligence games and illusions from his new book Brain TwistersPuzzles
New hybrid solar cells generate 5 times more energy by harnessing sunlight and heat at the same time
Scientists have developed a new hybrid solar cell that harnesses the sun’s light and heat to create more energy than ever before, thanks to the …
ABOVE THE CLOUDS<p>From the Amazon to Alberta, here are the best aerial shots from around the globe.<p>11.28.14 5:45 AM ET<p>NASA / Reuters
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The U.S. Embassy in Mexico issued a security message Friday warning U.S. citizens to avoid the Pacific resort of Acapulco because of violence and protests.<p>In yet another blow to a coastal city once favored by U.S. movie stars and jet-setters in the 1950s and '60s, the embassy said its personnel …