Sezon 4
Bölümler
1 Diamond Factory / Anthrax Investigation / Auto-Tune / Luis Von Ahn 30 Haz 2009 2 Hunt for Alien Earths / Art Authentication / Maydianne Andrade / Autism Genes 7 Tem 2009 3 Marathon Mouse/Dinosaur Plague/Franklin Chang-Díaz/Space Storms 14 Tem 2009 4 Picky Eaters/Capturing Carbon/Sea Lions and Walruses/Sangeeta Bhatia 21 Tem 2009 5 Moon Smasher/Secrets in the Salt/Bird Brains/Lonnie Thompson 28 Tem 2009 6 Public Genomes/Algae Fuel/Arctic Ocean Seafloor/Yoky Matsuoka 18 Ağu 2009 7 Saving Hubble Update/Gangster Birds/Alfredo Quiñones-Hinojosa/How Memory Works 25 Ağu 2009 8 Earthquakes in the Midwest/Sleep/Sang-Mook Lee/First Primates 1 Eyl 2009