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S1, E6: Humans owe their existence to phytoplankton, dinoflagellates, green algae cyanobacteria, and others; scientists believe they are the ancestors of terrestrial plants; phytoplankton continues to produce about half of all the oxygen in the atmosphere.

2 Feb 2018 · 28 min

Information

Released
2018
Run Time
28 min
Rated
PG

Languages

Audio
English (AAC), English (United States)
Subtitles
English (CC)

Accessibility

Closed captions refer to subtitles in available languages with the addition of relevant non-dialogue information.