The consequences of mass extinction and a daily news roundup
Nov 12, 2015•21 min•Transcript available on Metacast Episode description
Lauren Sallan discusses the consequences of a mass extinction event 359 million years ago on vertebrate body size; David Grimm talks about grandma's immune system, gambling on studies, and killer genes. Hosted by Sarah Crespi. [Img: Robert Nicholls]
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