Earth’s first lifeforms breathed arsenic, not oxygen
Big Think,
We owe the Earth's oxygen to ancient microbes that photosynthesized and released it into the world's oceans.
We owe the Earth's oxygen to ancient microbes that photosynthesized and released it into the world's oceans.
Billions of years ago, long before oxygen was readily available, the notorious poison arsenic could have been the compound that…