시즌 1

아트워크

#	이미지	제목	방영일
1		The Making of a Natural History Film	1974. 3. 3.
2		Where Did the Colorado Go?	1974. 3. 10.
3		Whales, Dolphins, And Men	1974. 3. 17.
4		The Search For Life	1974. 3. 24.
5		Last of the Cuiva	1974. 3. 31.
6		Strange Sleep	1974. 4. 7.
7		The Crab Nebula	1974. 4. 14.
8		Bird Brain: The Mystery of Bird Navigation	1974. 4. 21.
9		Are You Doing This For Me, Doctor?	1974. 4. 28.
10		The First Signs of Washoe	1974. 5. 5.
11		The Case of the Midwife Toad	1974. 5. 12.
12		Fusion: The Energy Promise	1974. 5. 19.
13		The Mystery of the Anasazi	1974. 5. 26.