Trump falsely claims that nobody knows if global warming is real

President-elect Donald Trump has spent the past few days tapping climate-change deniers and fossil fuel executives to fill his presidential cabinet. 
But on Sunday, he said he was "open-minded" about climate science, claiming falsely that "nobody really knows" what's happening to the planet.
"I've — look, I’m somebody that gets it," Trump told Fox News Sunday host Chris Wallace in a taped interview. "And nobody really knows. It's not something that's so hard and fast."
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