Host Ira Glass talks with David Kestenbaum about a phone app that can create alternate universes with the press of a button.

Host Ira Glass gives an update on his health status after going into quarantine last week, and David Kestenbaum interviews a 71 year old trying to avoid the virus.

David Kestenbaum talks to one teacher there who’s already gone through a month of in-person learning to see what the  future might hold for other schools.

For years one group of people has been trying to push a giant boulder to the top of a hill, like Sisyphus. But in this case, it looks like they’ve actually succeeded! David Kestenbaum spoke with four scientists who have been working on a coronavirus vaccine, one that was just shown to work.