Ever been amazed watching athletes keep up an incredible intensity even when it seems like their muscles should have given up ...

Scientists assumed most forms of life before the Great Oxidation Event didn't metabolize oxygen—but recent research suggests ...

Microbial organisms dominate life on Earth, but tracing their early history and evolution is difficult because they rarely ...

By explaining a novel system for respiration without oxygen, the study has revealed another facet of life’s resilience. Such findings reveal how the earliest life forms innovated to harness energy, ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

Two different teams of astronomers have detected oxygen in the most distant known galaxy, JADES-GS-z14-0. The discovery, reported in two separate studies, was made possible thanks to the Atacama ...

Astronomers have found oxygen in the farthest, and thus the earliest, galaxy ever seen. This marks the most distant detection of oxygen ever made by humanity. This early galaxy, designated JADES ...

Metrics of hypoxia tolerance include the oxygen level below which the costs of maintenance can no longer be met by oxygen uptake from the environment; the time or oxygen level at which aquatic surface ...

VATICAN CITY (CNS) -- Pope Francis has been able to spend brief moments of the day without any supplemental oxygen, which is yet another sign of the gradual improvement in his condition, the Vatican ...

Nevertheless, studies of ancient bacteria that still occur today in ecosystems without oxygen, e.g. in hot springs at the bottom of the ocean, suggest that a special form of respiration could have ...