geographist

Geographist

1 Years ago
Laughing gas may have helped warm early Earth and given breath to life

Laughing gas may have helped warm early Earth and given breath to life

Laughing gas and the mystery of Carl Sagan's Faint Young Sun Paradox: When the sun shone dimmer an eon ago, Earth remained warm in spite of it likely thanks to a mix of greenhouse gases. Biogeochemists have now shown how N20, known today for its use as a dental anesthetic, may have made it into the mix.

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