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Tiny Meteorites and Computer Models Suggest CO2 Blanketed Early Earth | GeekWire

2020-01-23 00:00:00

Today, rising carbon dioxide in the atmosphere is a cause for concern, but 2.7 billion years ago, high levels of CO2 probably kept our planet warm enough for life even though the sun was about 20% fainter than it is today. A newly published study estimates just how high those CO2 levels were. Owen Lehmer, a graduate student in Earth and space sciences at the UW, is quoted.

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