We have only one example of biology forming in the universe—life on Earth. But what if life can form in other ways? How do you look for alien life when you don’t know what alien life might look like?

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." All life on Earth can be traced back to a Last Universal Common Ancestor, or LUCA. A new study suggests ...

The origins of life on Earth have long fascinated scientists, particularly the nature of the last universal common ancestor ...

Country Facts That Will Completely Change How You See the World: 25 Facts You Probably Didnt Know About Evolution: Evolution ...

A new study uncovered fresh chemical evidence of life in rocks more than 3.3 billion years old, along with molecular traces showing that oxygen-producing photosynthesis emerged nearly a billion years ...

The break up of the supercontinent Nuna transformed the Earth’s surface, creating shallow marine habitats that may have given rise to eukaryotic life.

They’re the building rocks of life. Analysis of debris from the nearly 5 billion-year-old asteroid Bennu suggests the ingredients to life on Earth were present in the early days of our solar system, ...

About 700 million years ago, enormous glaciers flowed across the Earth's surface in powerful frozen rivers like "giant ice bulldozers" that pulverized our planet's crust and may have contributed to ...

The evolution of humans on Earth may not be entirely exceptional. That is because intelligent life is likely to form if certain planetary conditions are met, a new study suggests. This idea displaces ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. In the 1931 movie ...

As Earth’s magnetic field has risen, so have the conditions that helped complex life to thrive — a discovery that could aid the search for life on distant planets. The strength of Earth’s magnetic ...