Summary: This week we hear stories about a new brain imaging technique for newborns, recently uncovered evidence on rice domestication on three continents, and why Canada geese might be migrating into cities, with Online News Editor David Grimm. Sarah Crespi interviews Sarah Tishkoff of the University of Pennsylvania about the age and diversity of genes related to skin pigment in African genomes. Listen to previous podcasts. [Image: Danny Chapman/Flickr; Music: Jeffrey Cook]
