Megyn Kelly is joined by Bjorn Lomborg, author of "False Alarm," and David Wallace-Wells, author of "The Uninhabitable Earth," for a wide-ranging conversation and debate about climate change - realism and alarmism. Topics include the worst and best case climate change scenarios, whether climate change is the most important challenge facing humanity or not, America's impact vs. China and India's impact, debating our tangible climate future, celebrity hypocrisy, whether extreme weather events can be connected to climate change, what average Americans can do vs.