Sezon 46
Bölümler
1 Why Are Thin People Not Fat? 26 Oca 2009 2 Cannabis: The Evil Weed? 3 Şub 2009 3 Why Do We Dream? 10 Şub 2009 4 Can We Make a Star on Earth? 17 Şub 2009 5 The Secret Life of Your Bodyclock 24 Şub 2009 6 What's the Problem with Nudity? 3 Mar 2009 7 How to Survive a Disaster 10 Mar 2009 8 Who Do You Want Your Child to Be? 17 Mar 2009 9 Why Can't We Predict Earthquakes? 24 Mar 2009 10 Alan and Marcus Go Forth and Multiply 31 Mar 2009 11 How Violent Are You? 12 May 2009 12 Do I Drink Too Much? 22 Ara 2009 13 The Secret You 22 Ara 2009 14 Fix Me 22 Ara 2009 15 Who's Afraid of a Big Black Hole? 22 Ara 2009 16 Why Do We Talk? 22 Ara 2009 17 How Long is a Piece of String? 22 Ara 2009 
18 How Many People Can Live on Planet Earth? 9 Ara 2009