[Rockhounds] Life on Earth Before Oxygen in the Archean

[Paul]

We may Finally know what life on Earth breathed before
there was oxygen By Carly Cassella, ScienceAlert
https://www.livescience.com/life-on-earth-before-oxygen.html

The paper is:

Visscher, Pieter T., Kimberley L. Gallagher, Anthony Bouton,
Maria E. Farias, Daniel Kurth, Maria Sancho-Tomás, Pascal
Philippot et al. "Modern arsenotrophic microbial mats provide
an analogue for life in the anoxic Archean."
Communications Earth & Environment 1, no. 1 (2020): 1-10.
https://www.nature.com/articles/s43247-020-00025-2

Yours,

Paul H.