TED-Ed: Scientists are obsessed with this lake | Nicola Storelli and Daniele Zanzi

The video explores the impact of oxygen on Earth's atmosphere, leading to the Great Oxygen Catastrophe. It highlights environments where oxygen-averse microorganisms thrive, such as Lake Cadano in the Swiss Alps. This lake is unique due to its meromictic nature, with two distinct layers that never mix. The video delves into the chemical composition and ecological interactions within the lake, providing insights into early life evolution and the role of microorganisms. Scientists study these ecosystems to model pre-oxygen Earth and understand ancient biological processes.

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