Meet Erin Espelie, the scientist-turned-filmmaker who fuses science and art - The Week

Oxygen released by cyanobacteria led to multicellular organisms, including humans

More than 4.5 billion years ago, cyanobacteria started doing something that would change the earths atmosphere. The aquatic microorganism ate carbon and sunlight, multiplied, and released oxygen as a… [+5762 chars]

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