Air date: 2023-01-06

Runtime: min

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

Air date: 2023-01-13

Runtime: 44 min

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

Air date: 2023-01-20

Runtime: 44 min

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

Air date: 2023-02-03

Runtime: 44 min

How staff at a luxury hotel in Niagara Falls, NY helped ferry enslaved people to freedom.

Air date: 2023-02-10

Runtime: 44 min

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

Air date: 2023-02-17

Runtime: 44 min

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

Air date: 2023-02-24

Runtime: 44 min

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

Air date: 2023-03-03

Runtime: 44 min

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.

Air date: 2023-03-10

Runtime: 44 min

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

Air date: 2023-03-17

Runtime: 44 min

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

Air date: 2023-03-24

Runtime: 44 min

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

Air date: 2023-03-31

Runtime: 44 min

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

Air date: 2023-04-07

Runtime: 44 min

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.