LiveScience: It’s no surprise to those who follow climate science that temperature patterns have shifted as the world has warmed up. But in a new study, outspoken climate scientist James Hansen goes a step further, saying devastating heat waves in recent years are the result of global warming.
Since natural dynamics — such as fluctuations in sea-surface temperatures in the equatorial Pacific Ocean — contribute to extreme events like heat waves, this connection can be controversial.
Scientists disagree…

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