Laughing gas may have helped warm early Earth and given breath to life
Wednesday, August 22, 2018 - 08:00
in Earth & Climate
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.