Aerobic respiration began hundreds of millions of years earlier than previously thought, a new study suggests.

The last common ancestor of all living things did not just suddenly appear on Earth roughly 4.2 billion years ago.

Geologists from St. Petersburg State University, as part of an international scientific team, have analyzed rock data from ...

Some of Earth’s earliest microbes evolved the ability to use oxygen hundreds of millions of years before it accumulated in ...

Oxygen is everywhere on Earth today. But that hasn’t always been the case. Scientists think oxygen only became a lasting part ...

Oxygen is a vital and constant presence on Earth today. But that hasn't always been the case. It wasn't until around 2.3 ...

Scientists believe that Earth was once purple. The Purple Earth Hypothesis proposes that our planet's surface was once ...

For the first time in 54 years, humans will head toward the moon this week. So why does it feel like most of us are barely aware of it?

The Trump administration plans to deploy nearly $12 billion to create a strategic reserve of rare earth elements, a stockpile that ...

Elon Musk is joining his space exploration and artificial intelligence ventures into a single company before a massive ...

Elon Musk rammed through the combination of his space company, SpaceX, with his AI startup, xAI, on Monday, merging the ...