Horizon — Season 47

Episodes

• E1 Do I Drink Too Much?2009-10-13—
• E2 The Secret You2009-10-20—
• E3 Fix Me2009-10-27—
• E4 Who's Afraid of a Big Black Hole?2009-11-03—
• E5 Why Do We Talk?2009-11-10—
• E6 How Long is a Piece of String?2009-11-17—
• E7 The Secret Life of the Dog2010-01-068.5
• E8 Why Do Viruses Kill?2010-01-13—
• E9 Pill Poppers2010-01-20—
• E10 Don't Grow Old2010-02-03—
• E11 To Infinity and Beyond2010-02-107.0
• E12 What Makes a Genius?2010-02-17—
• E13 Did Cooking Make Us Human?2010-03-02—
• E14 Is Everything We Know About the Universe Wrong?2010-03-09—