Back to Show
Nature
Invasion of the Killer Whales | Preview
A shift of power is taking place at the top of the world. The polar bear, once king of the North, needs ice to stalk its prey. Killer whales, or orca, on the other hand, are unable to hunt in an ocean locked in ice. As Arctic ice increasingly disappears, the tables have turned. Polar bears are struggling to survive while the now open ocean provides bountiful new hunting grounds for the whales.
Support Provided By
Unlock with PBS Passport
53:30
Relationships with cats and dogs are some of the longest and most intimate of our lives.
Unlock with PBS Passport
53:47
In the Drakensberg Mountains of South Africa, eland make a remarkable journey of survival.
Unlock with PBS Passport
52:55
Ancient maps and legends tell of dragons in our world. Where did these stories come from?
Unlock with PBS Passport
51:14
In 1893, a bounty hunter journeyed to New Mexico on a mission to kill a dangerous outlaw.