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United Nations Secretary General Ban Ki-moon says the twin threats of global warming and spreading deserts pose what he calls "unrivaled challenges to humanity." Mr. Ban addressed a U.N. conference to combat desertification Wednesday in Madrid.
He said global warming and shifting weather patterns could worsen the problems of encroaching deserts, drought, and food security in places that are already dry, including parts of Africa. He also said global warming can also bring more poverty and forced migration. Mr. Ban said the two challenges demand an unprecedented response.
The Madrid conference is scheduled to last until Friday. It is part of the preparation for a major conference on global warming in December in Indonesia.
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