This 2012 episode from previous hosts Sarah and Deblina explores the rivalry between paleontologists Edward Drinker Cope and Othniel Charles Marsh. The two started out as friends, but their friendship soon soured.

SYMHC Classics: Gustave Courbet
40:51

Behind the Scenes Minis: Oh, Kropotkin!
17:28

Peter Kropotkin's Mutual Aid, Part 2
49:57