President Trump cited a major winter storm forecast to impact about two-thirds of the United States as evidence to suggest that global warming does not exist, repeating a misleading claim that has been consistently debunked by climate experts. In a Truth Social post on Friday, he said, "Record Cold Wave expected to hit 40 States. Rarely seen anything like it before. Could the Environmental Insurrectionists please explain — WHATEVER HAPPENED TO GLOBAL WARMING???" Climate scientists say Mr. Trump's statement conflates short-term weather trends with long-term climate changes. The unusually cold air spilling into the United States is an example of...