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The Conversation USA

Pigments from microbes provide clue to evolution in ancient oceans – but weren't pink a billion years ago

  • Written by Patricia L. Foster, Professor Emerita of Biology, Indiana University
Cyanobacteria filled the ancient oceans and used chlorophyll to harvest the sun's energy.Specious Reasons, CC BY-NC

Possibly the most significant event in the evolution of life on Earth occurred 2.4 billion years ago. That was when the amount of oxygen in the atmosphere and ocean surface waters rapidly increased – setting the stage for a new...

Read more: Pigments from microbes provide clue to evolution in ancient oceans – but weren't pink a billion...

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