A deep dive down the bottle to examine the role alcohol has played in society, politics, and global summitry—from the earliest hunter-gatherer days to that memorable Obama Beer Summit in 2009. Joining Ian Bremmer on the GZERO World podcast is philosopher Edward Slingerland, whose new book Drunk: HOW WE SIPPED, DANCED, AND STUMBLED OUR WAY INTO CIVILIZATION makes a compelling, if nuanced, case for alcohol’s place in the world.