The oldest evidence of Earth's ancient atmosphere may be lurking in rocks from the moon, a new study suggests. That's the takeaway from a new analysis of moon rocks that Apollo astronauts brought back ...

Explore 25 Major Events in Earth's 4.5 Billion Year History. Discover pivotal moments from its formation to the rise of life.

Our Earth is about 4.5 billion years old and, through careful work, scientists have pieced together a timeline of its past. But much of its earliest history remains a mystery. Scant geological ...

Earth’s earliest microbes may have built vital chemistry around molybdenum, a metal thought too scarce to matter in ancient ...

Japanese scientists have created the first-ever long-term dataset about Earth's entire atmosphere, stretching all the way to space. They hope the project will help shed light on some little-explored ...

The appearance of oxygen in Earth's atmosphere was a turning point in the history of our planet, forever transforming the environment and setting the stage for complex life. This event, known as the ...