Dear Mr. President-elect,In the last four years, federally funded science agencies were unmade and remade. At multiple federal agencies, climate science became “the subject that must not be named”—and the subject that should not be studied. But it did not survive a president who has falsely dismissed climate change as a hoax and a Chinese conspiracy. It did not survive a president who falsely asserts that science does not know the causes of climate change. The views expressed in this open letter are solely those of the author and not of the U.S. National Academy of Sciences.