Needles, Trash, Human Feces: What San Francisco Is Doing About Its Dirty Streets

San Francisco is having a hard time keeping its streets clean. Earlier this summer, a large medical convention backed out of choosing the city to host its event, citing "dirty streets" filled with needles, trash and human waste.

Here & Now's Jeremy Hobson speaks with Mohammed Nuru (@MrCleanSF), director of San Francisco Public Works, about the efforts to clean up the streets and to help the city's homeless population.