Around 2.3 billion years ago, the Great Oxygenation Event (GOE) marked a major turning point in Earth’s history. The increase ...

Scientists are trying to understand how complex life emerged on Earth about 2 billion years ago. Our microbial ancestors could be the key.

UC College of Arts and Sciences Professor Thomas Algeo has been studying the planet's five major mass extinctions since the ...

Earth was not always the blue-green world we know today: the early Earth's oxygen levels were about a million times lower than we now experience. There were no forests and no animals. For ancient ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Some 2.3 billion years ago, ...

Scientists are sharpening their forecasts for how long Earth can remain a comfortable home for complex organisms, and the latest work points to a much earlier cutoff than the classic textbook ...

The Great Oxygenation Event marked a massive transition in life on Earth, when oxygen became plentiful and organisms suddenly had to adapt. Current conditions in Japanese hot springs give clues as to ...

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 ...

Modern cells are complex chemical entities with cytoskeletons, finely regulated internal and external molecules, and genetic material that determines ...

Compared to previous theories, the current research emphasizes the complexity of the biological and chemical processes that brought about life.