The new study led by biogeochemist Sean Crowe has found surprising evidence that as far back as three billion year ago, there were levels of oxygen in the atmosphere too high to have been produced ...

Earth's shallow ocean contained oxygen earlier than expected, rewriting the history of the origin of life during the "Boring ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have discovered oxygen is being produced extremely deep below the ocean's surface, changing how we think about ...

For centuries, oxygen has been understood as a fundamental element that supports life and fuels combustion. Scientists have ...

Living stromatolites at Shark Bay, Western Australia. Oxygen produced by ancient stromatolites may have left its mark on Earth's environment as early as 2.5 billion years ago. Credit: Ariel Anbar When ...

The Earth was devoid of atmospheric oxygen two billion years ago. Indeed, free oxygen, as we breathe it today, only appeared in a lasting way at a time called the Great Oxidation Event. A team from ...

Chloe Gang ('26) has just been awarded our prestigious McCormack-Reboussin scholarship for AY 2025-2026. A French & Francophone Studies and Chemistry double-major, Chloe will be tracing a cultural ...

Several key moments in Earth’s history help us humans answer the question, “How did we get here?” These moments also shed light on the question, “Where are we going”? – offering scientists deeper ...