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Researchers have debated for more than two decades the likely impacts, if any, of global warming on the worldwide incidence of malaria, a mosquito-borne disease that infects more than 300 million people each year. Now ecologists are reporting the first hard evidence that malaria does -- as had long been predicted -- creep to higher elevations during warmer years and back down to lower altitudes when temperatures cool. [Source: e! Science News]
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