A flock of genomes and a news roundup (12 December 2014)

Erich Jarvis sums up the findings from sequencing 40+ bird genomes. Online news editor David Grimm brings stories capturing comet dust, the origins of life, and losing the Y chromosome. Hosted by Sarah Crespi. [Img: Copyright © Flip de Nooyer/Foto Natura/Minden Pictures] Learn more about your ad choices. Visit megaphone.fm/adchoices