Shortly before President Donald J. Trump's inauguration, his staff confirmed that he had met with two brilliant and pugnacious scientists, each said to be a candidate for the position of science adviser or director of the Office of Science and Technology Policy.
On Jan. 13, Trump met at Trump Tower in Manhattan with one of them, Dr. Will Happer, an emeritus Princeton University physicist variously hailed and attacked for his enthusiasm about rising levels of heat-trapping carbon dioxide that an overwhelming range of scientists see as a profound, if slow-motion, threat to human prospects and to nature.
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