WASHINGTON (AP) — A new federal report is the most exhaustive and perhaps even easiest-to-read look at what global warming will to do the United States, say experts who strongly support it.

The report, required by federal law, is “the most comprehensive assessment ever done on how climate is affecting the United States,” said University of Illinois climate scientist Donald Wuebbles, a study author. White House counselor John Podesta called it authoritative and “a tremendous undertaking.”