We've all heard talk about "the new normal," whatever that even is. CNN's chief medical correspondent Dr. Sanjay Gupta has his own ideas, and despite the harsh realities of nearly two years living through a pandemic — quarantines, hospital staffing shortages, massive loss of life — he remains optimistic. In his new book World War C, he says, COVID is something we'll likely live with... forever. But that doesn't mean it has to control our lives. He sat down with NPR's Rachel Martin to talk about it in today's episode.