According to the "grandmother hypothesis," humans have grandmas, nanas and bubbies to thank for their longer lifespans. In this episode, Cristen and Caroline reveal the compelling science and evolution behind these important maternal figures.
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

SMNTY Classics: Demystifying Disability
37:45

Listener Mail: July 2026
41:12

Happy Hour #227: SMNTY's All Aboard on Trains
17:10