President Donald Trump’s declaration last month that climate change is a “serious subject” marked the completion of a yearlong shift away from his outright denial of the global threat — a shift, ...

When William Happer realized this summer that his plan to question climate science had been shut down by the White House, he knew he’d stick to his promise: to serve exactly one year in the Trump ...

The Trump official who thinks carbon dioxide is vilified just like “poor Jews under Hitler” has been a professional “climate change skeptic” — i.e., denier — for years. But now, he has a major ...