Season 62 (2023)
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Episodes 13
Last of the Right Whales
North Atlantic right whales are on the brink of extinction. Follow the fight to save them.
Read MoreScience & Cannabis
Is cannabis a medical cure-all or snake oil? Scientists distinguish the medicine from the myths.
Read MoreSecret Agents Of The Underground Railroad
How staff at a luxury hotel in Niagara Falls, NY helped ferry enslaved people to freedom.
Read MoreWalking With Ancients
New archaeological discoveries are challenging our understanding of when the first people arrived in North America, rewriting the human story.
Read MoreApocalypse 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.
Read MoreTrue Survivors
How have humans survived extreme environmental change in the past? And what will it take to survive what’s next?
Read MoreGrizzly 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.
Read MoreWar for the Woods
Thirty years after historic logging protests on Vancouver Island, the battle to protect old growth forests is still raging.
Read MoreThe Secrets of Friendship
Step into the world of 'friendship detectives', who are unravelling the mysteries of social behaviours in humans and other animals.
Read MoreWoodpeckers: The Hole Story
Inside the secret and rhythmic world of one of nature’s best lumberjacks.
Read MoreSuzuki 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.
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