Tornadoes! Floods! Droughts! Scientists say it’s global warming

Prospectus News - The deadliest tornadoes in decades. Severe flooding on the Mississippi River. Drought in Texas, and heavy rains in Tennessee. What's up with the weather?

The deadliest tornadoes in decades. Severe flooding on the Mississippi River. Drought in Texas, and heavy rains in Tennessee.

What's up with the weather?

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"Anything that's happening now is occurring superimposed on very different background conditions than we used to have. We have significantly altered our background conditions," said Katharine Hayhoe, a climate scientist at Texas Tech University.

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