Study: Pollution Led to African Drought

Decades of drought in central Africa may have had a surprising cause, according to new research that challenges the notion that the severe dry weather was triggered mainly by bad agricultural practices and overgrazing.

The research, done at the University of Washington, shows that the drought was at least partially caused by pollution in the Northern Hemisphere.

The researchers said that sulfate-laden aerosols coming from coal-burning factories from the 1960s through the 1980s actually …

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