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1 Years ago
Billion-year-old lake deposit yields clues to Earth's ancient biosphere: Finding could help inform astronomers' search for life outside our solar system

Billion-year-old lake deposit yields clues to Earth's ancient biosphere: Finding could help inform astronomers' search for life outside our solar system

A sample of ancient oxygen, teased out of a 1.4-billion-year-old evaporative lake deposit in Ontario, provides fresh evidence of what the Earth's atmosphere and biosphere were like during the interval leading up to the emergence of animal life.

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