Fascinating Brains - beyond the tool-making brain.

 Here is the set up of the classic joke:

A human brain, a dolphin brain, a octopus brain, and an ant brain walk in to a bar....

Well that will not happen... but 4 diverse experts studying those creatures brains did walk into an interview and this is what came out of it.

"Redefine 'Man',  redefine 'Tool', or accept chimpanzees as human." -  Louis Leakey

PARTICIPANTS: Simon Garnier, Suzana Herculano-Houzel, Frank Grasso, Denise Herzing MODERATOR: Faith Salie