Scientists warned for years that a coronavirus could trigger the next big pandemic, but those warnings were largely ignored. Science writer David Quammen joins host Krys Boyd to discuss what we know about the origins of SARS-CoV-2 and how it spread so quickly in the human population. Plus, we’ll meet the virologists trying to head off future pandemics. His book is “Breathless: The Scientific Race to Defeat a Deadly Virus.”