Science Podcast - Recombining vaccines, pre-Clovis North Americans, HIV in the U.S., and more (13 July 2012)
![Science Magazine Podcast show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/030/790/small/science-magazine-podcast.jpg)
Summary: A vaccine recombines with a virus in the wild; evidence for a North American culture that may pre-date the Clovis; the many faces of HIV and AIDS in the United States; and more.