Amanpour

Christiane speaks with Dr. Francis Collins, former director of the National Institutes of Health, about his decision to leave the organization and his fears over cuts and possible politicization of health research in America. Then Ukrainian documentary filmmaker Mstyslav Chernov joins Christiane to discuss his unsparing new film, "2000 Meters to Andriivka", which takes viewers to the frontline to show the reality of the war, as experienced by the men fighting it. Also on the show: Carly York speaks with Michel Martin about why often seemingly trivial research can lead to scientific breakthroughs, as explored in her recent book, "The Salmon Cannon and the Levitating Frog".