In this special episode of Freakonomics, M.D., host Bapu Jena looks at data from birthday parties, March Madness parties, and a Freakonomics Radio holiday party to help us all manage our risk of Covid-19 exposure.

The more successful an artist is, the more likely their work will later be resold at auction for a huge markup — and they receive nothing. Should that change? Also: why doesn’t contemporary art impact society the way music and film do? (Part 2 of “The Hidden Side of the Art Market.”)