Episode 140: Swapping Spit

Pucker up! On today's episode we investigate the kiss. First, what's in the saliva we share with each other? Then we interview Sheril Kirshenbaum, author of The Science of Kissing, to find out why our ancestors starting locking lips in the first place. SHOW CLOCK 00:00 Opening Credits 00:32 Introduction 01:29 Saliva 04:33 Interview with Sheril Kirschenbaum 12:03 Closing Credits CREDITS Special thanks to Jennifer Dionisio for researching this show. Additional credits available at chemheritage.org/distillations.