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25 Aug 2011 description

24 Aug 2011 17:07

By Deborah Zabarenko, Environment Correspondent

WASHINGTON, Aug 24 (Reuters) - The El Nino climate cycle, which spreads warm, dry air around the globe every four years or so, doubles the risk of civil wars in 90 tropical countries, researchers reported on Wednesday.

And because El Nino patterns can be predicted up to two years in advance, scientists suggest their findings could be used to help prepare for some conflicts and the humanitarian crises they cause.