Fool's Gold Suggests Ancient Life in 'Oxygen Oases' Far Before There Was Atmospheric Oxygen

Scientists may have located an ancient oxygen oasis that existed prior to whatever event first oxygenated our atmosphere.

from gizmodo http://www.gizmodo.co.uk/2018/01/fools-gold-suggests-ancient-life-in-oxygen-oases-far-before-there-was-atmospheric-oxygen/