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  2. Episode of Nova Sciencenow

Nova Sciencenow

Series 4, Episode 4

Season 4, Episode 4 of 8

The science behind our sense of taste; a product that may fulfill the dream of creating an artificial tree that can absorb carbon dioxide directly from the air; shedding light on the evolutionary roots of human language through studies of walrus and sea lion vocal and intellectual abilities; and a profile of medical engineer Sangeeta Bhatia.

More From this Series

Previously Aired

Day
Time
Channel
7/21/2009
9 p.m.
PBS 6
7/22/2009
2 a.m.
PBS 6
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