How Poaching Led to Serial Killer Elephants

When young bull elephants start killing off females, scientists realize that severe poaching not only skewed the sanctuary's gender balance, it also psychologically damaged these once gentle giants (3:45)

Latest Videos

Preview thumbnail for video'Mount Rushmore Was Supposed to Look Very Different
Mount Rushmore Was Supposed to Look Very Different (3:56)
Preview thumbnail for video'This Video Exposes Hitler's Secret Illness
This Video Exposes Hitler's Secret Illness (2:56)
Preview thumbnail for video'How Did Michelangelo Complete the Sistine Chapel in Such a Short Time?
How Did Michelangelo Complete the Sistine Chapel in Such a Short Time? (2:02)
Preview thumbnail for video'Danger Lurks in a Roman Latrine
Danger Lurks in a Roman Latrine (1:59)
Preview thumbnail for video'A Table That Serves Up Everything But Secrets
A Table That Serves Up Everything But Secrets (2:02)
Preview thumbnail for video'Ketchum, Idaho: Hemingway's Sunny Home Away from Home
Ketchum, Idaho: Hemingway's Sunny Home Away from Home (4:07)
Preview thumbnail for video'Don't Fall Asleep on Duty
Don't Fall Asleep on Duty (2:41)
Preview thumbnail for video'
"Die Hard" Explained: Extinguishing Your Enemies (2:19)
Preview thumbnail for video'
"Die Hard" Explained: Could John McClane Really Shoot Through His Own Shoulder? (3:10)