How a single-celled organism almost wiped out life on Earth - Anusuya Willis
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There’s an organism that changed the world. It caused the first mass extinction in Earth’s history … and also paved the way for complex life. How? Anusuya Willis explains how cyanobacteria, simple organisms that don’t even have nuclei or any other organelles, wrote a pivotal chapter in the story of life on Earth.
The composition of the Earth’s atmosphere has changed throughout the Earth’s history. How does the composition of the atmosphere affect Earth's climate?
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