Has the U.S. set realistic goals to combat climate change?

Has the U.S. set realistic goals to combat climate change? A climate scientist weighs in More

To discuss the ambitions of the climate summit and the very real challenges to President Joe Biden's plans, we're joined by Michael Mann, a climate scientist and professor of atmospheric sciences at Penn State University. He's the author of, "The New Climate War: The Fight to Take Back Our Planet." This reporting is part of the international journalism collaborative called "Covering Climate Now."

AIR DATE 4/22/21