Skip to main content
Back to Show
PBS News Hour

The phytoplankton that brought Earth to life

Without the "billion billion billion" Prochlorococcus, a plant-like bacteria in the ocean, Earth would not have the oxygen we breathe today. But the more scientists study about these diverse organisms, the less they know, says Penny Chisholm, an oceanographer at MIT.

Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By
Season
May 9, 2025 - PBS News Hour full episode
57:46
May 9, 2025 - PBS News Hour full episode
May 8, 2025 - PBS News Hour full episode
57:46
May 8, 2025 - PBS News Hour full episode
May 7, 2025 - PBS News Hour full episode
57:46
May 7, 2025 - PBS News Hour full episode
May 6, 2025 - PBS News Hour full episode
57:46
May 6, 2025 - PBS News Hour full episode
May 5, 2025 - PBS News Hour full episode
57:46
May 5, 2025 - PBS News Hour full episode
May 4, 2025 - PBS News Weekend full episode
26:45
May 4, 2025 - PBS News Weekend full episode
May 3, 2025 - PBS News Weekend full episode
26:44
May 3, 2025 - PBS News Weekend full episode
May 2, 2025 - PBS News Hour full episode
56:45
May 2, 2025 - PBS News Hour full episode
May 1, 2025 - PBS News Hour full episode
56:42
May 1, 2025 - PBS News Hour full episode
April 30, 2025 - PBS News Hour full episode
56:44
April 30, 2025 - PBS News Hour full episode
April 29, 2025 - PBS News Hour full episode
56:45
April 29, 2025 - PBS News Hour full episode
April 28, 2025 - PBS News Hour full episode
56:45
April 28, 2025 - PBS News Hour full episode
Active loading indicator