Yesterday WNYC's Radiolab's most recent podcast episode, Shrink, discussed the discovery of a giant virus that sheds light on the nature of life itself. 

How did we miss these until now? Have they been around since the beginning? What if evolution could go … backwards?

Join Jad and Robert as they grill Radiolab regular Carl Zimmer on these paradoxical viruses – they’re so big that they can get their own viruses! - and what they can tell us about the nature of life. 

Cover image: Radiolab