The work challenges the assumption that all life descended from one free-living cell. Instead, it suggests that two microbial ...

Life as we know it wouldn’t be what is today without a lot of poop. In fact, Earth may have never hosted any life at all ...

In the first 20 million years of the Cambrian period, Earth experienced an explosion of life—a great evolutionary era dubbed ...

(witsawat sananrum/iStock/Getty Images Plus) The fact that you, or I, or any living creature, is here at all is a series of ...

Add Yahoo as a preferred source to see more of our stories on Google. All life on Earth can be traced back to a Last Universal Common Ancestor, or LUCA. A study suggests that this organism likely ...

In 7.5 billion years, the Sun will expand and engulf our planet, destroying all life as we know it. Of course, a mass ...

Some scientists think that in five billion years, as the Sun ages and transforms into a Red Giant, Earth will be swallowed whole, effectively ending its 10-billion-year-long existence. However, due to ...

One debate about the origin of life on Earth concerns whether it formed around deep-sea hydrothermal vents or in scars left behind by an asteroid impact. A new review article analyzes recent research ...

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?

This publication has been produced to meet accepted Accessibility standards and contains various accessibility features including concise image descriptions, a table of contents, a page list to ...

Sugars are crucial components of RNA and DNA, the basis of all known organisms alive today. In a new study, the sugar erythrulose was detected in a gas- and dust-filled cloud near the center of our Mi ...