The U.S. government and scientists remain uncertain about the exact origins of the coronavirus outbreak: transmission from animals or research lab escape? Either option has lessons for how society can contain future pandemics.This episode: congressional correspondent Susan Davis, White House correspondent Tamara Keith, and science correspondent Geoff Brumfiel.Connect:Subscribe to the NPR Politics Podcast here.Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Listen to our playlist The NPR Politics Daily Workout.Subscribe to the NPR Politics Newsletter.Find and support your local public radio station.