The Nature of Things Season 62, Episode 4: Secret Agents Of The Underground Railroad

Last of the Right Whales

North Atlantic right whales are on the brink of extinction. Follow the fight to save them.

Rat City

Remarkable superpowers make rats the evolutionary heroes of the animal kingdom.

44 min

Science & Cannabis

Is cannabis a medical cure-all or snake oil? Scientists distinguish the medicine from the myths.

44 min

Walking With Ancients

New archaeological discoveries are challenging our understanding of when the first people arrived in North America, rewriting the human story.

44 min

Apocalypse Plan B

Some scientists are proposing radical ways to cool our warming planet – but others say it’s time to restore nature on a global scale.

44 min

True Survivors

How have humans survived extreme environmental change in the past? And what will it take to survive what’s next?

44 min

Grizzly Rewild

Five orphaned grizzly bear cubs get a second chance at life in the wild, but can they survive without their mother? A groundbreaking study follows the bears to find out if rewilding works.

44 min

Bug Sex

Broken genitals and cannibalism. Welcome to the weird and wonderful world of how bugs get busy.

44 min

War for the Woods

Thirty years after historic logging protests on Vancouver Island, the battle to protect old growth forests is still raging.

44 min

The Secrets of Friendship

Step into the world of 'friendship detectives', who are unravelling the mysteries of social behaviours in humans and other animals.

44 min

Woodpeckers: The Hole Story

Inside the secret and rhythmic world of one of nature’s best lumberjacks.

44 min

Suzuki Signs Off

For 44 years, David Suzuki has taken us around the world to explore science, technology, and nature – and now for something completely different. End of series.

44 min