Overview: Hosted by Jane Pauley: In our cover story, David Pogue examines how extreme weather events are creating "climate refugees." Plus: Ted Koppel talks with Dr. Anthony Fauci about government efforts against the coronavirus; Kelefa Sanneh looks at businesses deciding whether to allow employees to continue working from home; Seth Doane meets Italian artisans who are keeping alive their country's fashion industry hard-hit by the pandemic; Mark Whitaker interviews Pennsylvania Lt. Gov. John Fetterman; and Lee Cowan looks back at the career of broadcaster Larry King.