Billions of years ago, Earth’s atmosphere was hostile, with barely any oxygen and toxic conditions for life. Researchers from the Earth-Life Science Institute studied Japan’s iron-rich hot springs, which mimic the ancient oceans, to uncover how early microbes survived. They discovered communities of bacteria that thrived on iron and tiny amounts of oxygen, forming ecosystems that recycled elements like carbon, nitrogen, and sulfur.
Source: https://www.sciencedaily.com/releases/2 ... 074009.htm
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