Season 50

1.London Super Tunnel

2.Star Chasers of Senegal

3.Ancient Builders of the Amazon

4.New Eye on the Universe

5.Weathering the Future

6.Chasing Carbon Zero

7.Saving the Right Whale

8.Hidden Volcano Abyss

9.Your Brain: Perception Deception (1)

10.Your Brain: Who's in Control? (2)

11.Ancient Earth: Birth of the Sky

12.Ancient Earth: Frozen

13.Ancient Earth: Life Rising

14.Ancient Earth: Inferno

15.Ancient Earth: Humans

16.Inside China's Tech Boom

17.The Battle to Beat Malaria

18.Lee and Liza's Family Tree