This Broadcast
NOVA
9:00 pm - 10:00 pm Wednesday, September 23
CPTV HDTV
49.1
REPEAT
Knowledge Keepers
For millennia, Indigenous communities in North America have practiced a unique form of science. From navigating the featureless Arctic to building energy-efficient homes in the desert, see how cultural traditions have led to remarkable innovations.
Repeat
2026
English
1080i
Stereo
Science & Technology
Science
Nature
Documentary
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