Sezon 49
Bölümler
1 Do You See What I See? 8 Ağu 2011 
2 Seeing Stars 15 Ağu 2011 
3 The Nine Months That Made You 22 Ağu 2011 
4 The Core 31 Ağu 2011 
5 Are You Good or Evil? 7 Eyl 2011 
6 Fukushima: Is Nuclear Power Safe? 14 Eyl 2011 
7 Playing God 17 Oca 2012 
8 The Truth About Exercise 28 Şub 2012 
9 Solar Storms: The Threat to Planet Earth 6 Mar 2012 
10 Out of Control? 13 Mar 2012 
11 Global Weirding 27 Mar 2012 
12 The Truth about Fat 20 Mar 2012 
13 Defeating Cancer 10 Nis 2012