Looking for COVID-19's Origin Story

Over a year into the pandemic, the origins of COVID-19 are still a mystery. Carl Zimmer, New York Times science columnist and author of Life's Edge: The Search for What It Means to Be Alive (Dutton March 9, 2021), talks about the different origin theories within the scientific community, and why the idea that the disease accidentally leaked from a lab in Wuhan, China has gained some credibility when it was previously largely dismissed.