Weird weather

Global warming helped trigger heat waves and droughts last year

By Roberta Kwok, 13:31 PM August 3, 2012

People living in Texas experienced a miserably hot summer in 2011. In fact, it was the hottest the state had ever recorded. Earlier that spring, much of East Africa was so dry that farmers had trouble growing their crops. With little to eat, many people went hungry.

Scientists have now concluded that these extreme weather episodes, half a world apart, were among several known events caused at least partly by global warming. The researchers’ findings appear in a new report. It was publishe...

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