S1 E1: The Making Of A Natural History Film

S1 E2: Where Did the Colorado Go?

S1 E3: Whales, Dolphins, and Men

S1 E4: The Search For Life

S1 E5: Last of the Cuiva

S1 E6: Strange Sleep

S1 E7: The Crab Nebula

S1 E8: Bird Brain: The Mystery of Bird Navigation

S1 E9: Are You Doing This for Me, Doctor?

S1 E10: The First Signs Of Washoe

S1 E11: The Case of the Midwife Toad

S1 E12: Fusion: The Energy of Promise

S1 E13: The Mystery Of The Anasazi