37 - 1Darwin's Darkest Hour Oct. 06, 2009- 37 - 2Hubble's Amazing Rescue Oct. 13, 2009
- 37 - 3Lizard Kings Oct. 20, 2009
- 37 - 4Becoming Human: First Steps Nov. 03, 2009
- 37 - 5Becoming Human: Birth of Humanity Nov. 10, 2009
- 37 - 6Becoming Human: Last Human Standing Nov. 17, 2009
- 37 - 7What Are Dreams? Nov. 24, 2009
- 37 - 8What Darwin Never Knew Dec. 29, 2009
- 37 - 9Killer Subs in Pearl Harbor Jan. 05, 2010
- 37 - 10Building Pharaoh's Ship Jan. 12, 2010
- 37 - 11Riddles of the Sphinx Jan. 19, 2010
- 37 - 12Ghosts of Machu Picchu Feb. 02, 2010
- 37 - 13Extreme Cave Diving Feb. 09, 2010
- 37 - 14The Pluto Files Mar. 02, 2010
- 37 - 15Hunting the Edge of Space: The Mystery of the Milky Way Apr. 06, 2010
- 37 - 16Hunting the Edge of Space: The Ever Expanding Universe Apr. 13, 2010
- 37 - 17Mind Over Money Apr. 27, 2010
- 37 - 18Mt. St. Helens Back From the Dead May. 04, 2010
