Earlier this year, the Metropolitan Museum of Art said it will name its newly remodeled plaza and fountains for David H. Koch, the billionaire conservative activist who gave $65 million towards the renovation. Koch has his name on a few prominent buildings around town, including the former New York State Theater at Lincoln Center and the American Museum of Natural History's dinosaur wing.

Koch presents one of the most visible examples of naming rights, a trend that some say is a necessary part of philanthropy. Yet others argue that giving should be a selfless, anonymous act. In this podcast, we consider what's driving the trend and what it signifies.