A new study highlights how life possibly evolved prior to and during the rise of Earth’s oxygenated atmosphere.

The causes of CVI are varied (see Figure 1) with the most common causes being hypoxic or anoxic brain damage. Hypoxic brain damage results from the reduction of oxygen supply to a tissue, which can ...

“Low-to-no-oxygen, or anoxic, conditions near the lake bottom are created by seasonal temperature stratification, where a warm layer of water on top of the lake prevents oxygen from reaching the ...