Just over a week ago, I stepped out onto a stage in New York City to join a show, in front of a live audience of 130 people. Tickets to the event had sold out almost as soon as they’d gone on sale. It was, of course, a massive ego boost, though the audience wasn’t there just to see me. They were there for the whole cast of “This Week in Virology,” the podcast I’ve been co-hosting for fifteen years.