Sezon 22
Bölümler
1 Are We Killing Our Koalas? 16 Şub 2021 
2 Mars: Our Second Home? 23 Şub 2021 
3 Mars: The Hunt For Life 2 Mar 2021 
4 Kill or Cure: The Story of Venom 9 Mar 2021 
5 Cancer: A Story of Hope 20 Tem 2021 
6 The Truth About Fasting 27 Tem 2021 
7 The Wildlife Revolution 3 Ağu 2021 
8 The Grid: Powering the Future 10 Ağu 2021 
9 Doctor at the Door: The McClellands 17 Ağu 2021 
10 Doctor at the Door: The Kulkarnis 24 Ağu 2021 
11 Magic and the Brain: The Science of Illusion 31 Ağu 2021