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The Corot space mission is scheduled to launch next week to hunt for smaller Earth-like planets orbiting around other suns. American Geophysical Union meeting focuses on reasons for weather changes on Earth, including the dramatic effects of magnetic activity caused by the Sun's 11-year solar cycle. Possible breakthrough in mosquito repellents – if scientists can make humans invisible to mosquitoes, using the insect's sensitivity to carbon dioxide. Plus, solving the Poincaré Conjecture.