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20
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17:49
Zeresenay Alemseged: Finding the origins of humanity
998
B1 Intermediate
US
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05:21
Cell membranes are way more complicated than you…
712
B2 High-Intermediate
US
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16:08
Louise Leakey: Digging for humanity's origins
401
B1 Intermediate
US
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16:36
The Life and Death of Stars: White Dwarfs, Supernovae,…
132
B2 High-Intermediate
US
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12:34
The Giant Dinosaur That Was Missing a Body
90
B2 High-Intermediate
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30:59
Jared Rutter (U. Utah, HHMI) 1: Mitochondria:…
46
B2 High-Intermediate
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11:11
How Close Are We to a Complete Tree of Life?
35
B1 Intermediate
US
劉源清
liu3907
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