A generation ago, the dream of owning a bicycle was one shared by a vast number of American kids. While the explosion of competitors like video games and iPhones may have somewhat tempered that youthful enthusiasm for bikes in this country, there are still millions of children in developing nations who can only begin to imagine having their very own bicycle. This week’s guest on Sea Change Radio, Dan Austin, is in the business of fulfilling those dreams for kids from Belgrade to Calcutta. He talks about his philanthropic nonprofit 88Bikes, the problem his organization is trying to solve and the unique way it puts donors directly in touch with recipients. Then, we dig into the Sea Change Radio archives to discuss ways to tackle homelessness in this country with San Francisco City Supervisor Rafael Mandelman.