Season 4 poster

Season 4

8 episodes June 30, 2009

Episodes

1 Diamond Factory / Anthrax Investigation / Auto-Tune / Luis Von Ahn Jun 30, 2009 No ratings 2 Hunt for Alien Earths / Art Authentication / Maydianne Andrade / Autism Genes Jul 7, 2009 No ratings 3 Marathon Mouse/Dinosaur Plague/Franklin Chang-Díaz/Space Storms Jul 14, 2009 No ratings 4 Picky Eaters/Capturing Carbon/Sea Lions and Walruses/Sangeeta Bhatia Jul 21, 2009 No ratings 5 Moon Smasher/Secrets in the Salt/Bird Brains/Lonnie Thompson Jul 28, 2009 No ratings 6 Public Genomes/Algae Fuel/Arctic Ocean Seafloor/Yoky Matsuoka Aug 18, 2009 No ratings 7 Saving Hubble Update/Gangster Birds/Alfredo Quiñones-Hinojosa/How Memory Works Aug 25, 2009 No ratings 8 Earthquakes in the Midwest/Sleep/Sang-Mook Lee/First Primates Sep 1, 2009 No ratings