Just 210 elephants and 190 tigers remain in Indonesia, and within 20 years, all of Sumatra's orangutans could be extinct. This is the extraordinary tale told by MSNBC's Jeff Corwin as he travels the globe in his show, 100 Heartbeats. Corwin stumbles upon inspiring feats of human care for the world's endangered animals and even encounters a black rhino with an entourage of six armed guards. The lengths people are going to fight back against the destruction of the environment makes for a fascinating and inspiring story.
The show airs Sunday, Nov. 22, at 8:00 p.m. ET on MSNBC.