[Rockhounds] Ancient Earth had a thick, toxic atmosphere like Venus

[Paul]

Ancient Earth had a thick, toxic atmosphere like Venus—
until it cooled o! and became liveable, November 26, 2020
https://theconversation.com/ancient-earth-had-a-thick-toxic-atmosphere-like-venus-until-it-cooled-off-and-became-liveable-150934
https://www.newscientist.com/article/2260767-earths-early-atmosphere-may-have-been-toxic-like-the-one-on-venus/

The paper is:

Sossi, P.A., Burnham, A.D., Badro, J., Lanzirotti, A.,
Newville, M. and O’Neill, H.S.C., 2020. Redox state of
Earth’s magma ocean and its Venus-like early
atmosphere. Science Advances, 6(48), p.eabd1387.
https://advances.sciencemag.org/content/6/48/eabd1387.abstract

Yours,

Paul H.