Meredith Greif is a sociology professor at Johns Hopkins University in Maryland, USA. Her work focuses on the symbiotic relationship between tenants and landlords. "The point of my work," she told Sean Keyes in this week's podcast, "is to show that caring about landlords is important because it means caring about tenants. Landlords' behaviour is so consequential that if you want to help the renter, you have to think about what's happening to the landlord. And it's not condoning or looking away from bad landlord behaviour".