However, light that leaves our star also contains UVC radiation, which has a shorter wavelength than UVA or UVB light and ...

How did Earth, alone among the solar system's rocky planets, become the home for life? How, among all this frigid ...

Strange cone-shaped rocks led scientists to the hidden remains of one of Earth’s oldest asteroid impacts. It could help us find fossil life on Mars.

All life on Earth can be traced back to a Last Universal Common Ancestor, or LUCA—and it likely lived on Earth only 400 million years after its formation.

The pH scale is a measure of how acidic or alkaline something is, 1 being highly acidic, 14 being highly alkaline, and 7 ...

People have long wondered what life was first like on Earth, and if there is life in our solar system beyond our planet. Scientists have reason to believe that some of the moons in our solar system – ...

Ancient oceans with phosphorus-rich waters may have supported some of Earth’s earliest microbial life, according to a new ...

Life on Earth won’t suddenly end—it will fizzle out with a slow, irreversible decline. But despite the long time span, researchers are urging the importance of preparation and adaptation for ...

Using their new model, Korenaga and Guo estimated that it would have taken Earth 500 million years to neutralize ocean acidity enough to support life. Pockets of water with more neutral pH levels may ...

Earth was so cold at the time that the oceans were frozen all the way to the equator, and life only existed in the oceans and on continental shelves, study co-author Donnelly Archibald, of St ...