How an unintended consequence helped American crocodiles thrive (Part 1)

UP NEXT
Jon Stewart fights to help veterans exposed to burn pits (Part 1)
04:10
Jon Stewart fights to help veterans exposed to burn pits (Part 2)
02:53
Inside the effort to feed Florida's manatees (Part 1)
02:58
Inside the effort to feed Florida's manatees (Part 2)
01:02
80 years after Pearl Harbor, survivors reflect on the day that changed history (Part 1)
06:28
80 years after Pearl Harbor, survivors reflect on the day that changed history (Part 2)
06:29
Musicians spreading holiday cheer in hospitals across U.S. (Part 1)
01:43
Musicians spreading holiday cheer in hospitals across U.S. (Part 2)
02:17
Blood test detects over 50 types of cancer (Part 1)
02:31
Blood test detects over 50 types of cancer (Part 2)
01:28
How the elite U.S. Forest Service hotshots battle wildfires (Part 1)
02:05
How the elite U.S. Forest Service hotshots battle wildfires (Part 2)
02:08
Climate change in Guatemala: Between starvation and migration (Part 1)
06:51
Climate change in Guatemala: Between starvation and migration (Part 2)
05:11
A look at St. Louis' iconic Gateway Arch (Part 1)
02:01
A look at St. Louis' iconic Gateway Arch (Part 2)
01:58
Extended interview: Rita Moreno and Ariana DeBose on ‘West Side Story’ remake (Part 1)
03:03
Extended interview: Rita Moreno and Ariana DeBose on ‘West Side Story’ remake (Part 2)
03:18
Black playwrights take center stage on Broadway (Part 1)
03:46
Black playwrights take center stage on Broadway (Part 2)
02:24

UP NEXT
Jon Stewart fights to help veterans exposed to burn pits (Part 1)
04:10
Jon Stewart fights to help veterans exposed to burn pits (Part 2)
02:53
Inside the effort to feed Florida's manatees (Part 1)
02:58
Inside the effort to feed Florida's manatees (Part 2)
01:02
80 years after Pearl Harbor, survivors reflect on the day that changed history (Part 1)
06:28
80 years after Pearl Harbor, survivors reflect on the day that changed history (Part 2)
06:29