Season 12 aired between 04 Oct 1971 and 31 Jan 1972, 10 episodes.
Episodes
E01
Banting, Best and Insulin
04 Oct 1971
E02
Cancer in Canada
11 Oct 1971
E03
Parkinson's Disease
25 Oct 1971
E04
The Living Arctic
29 Nov 1971
E05
The Fur Trade
13 Dec 1971
E06
The Harp Seal
03 Jan 1972
E07
Grouse Country
10 Jan 1972
E08
The Polar Bear
17 Jan 1972
E09
Lobsters and the Sea
24 Jan 1972
E10
Vanishing Peoples: Yanomami
31 Jan 1972