We may Finally know what life on Earth breathed before
there was oxygen By Carly Cassella, ScienceAlert
The open access 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.
Yours,
Paul H.