The clearest picture yet of our “last universal common ancestor” suggests it was a relatively complex organism living 4.2 ...

From the bottom up, the image portrays the Arecibo radio telescope; the solar system; a human's average height (5'9"); an ...

Earth may have had a ring made up of a broken asteroid over 400 million years ago, a study finds. The Saturn-like feature ...

Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than ...

Ancient life on Earth might have thrived after a meteorite four times the size of Mount Everest crashed into the planet, research suggests. Billions of years ago meteorites hit the planet frequently, ...

Earth’s surface is a dynamic, ever-changing landscape. Massive crustal plates shift, creating mountains, earthquakes, and ...

Life on Earth has faced catastrophic events before, but certain extinction-level threats could completely erase humanity.

This model reveals how vastly different the atmosphere was on ancient Earth, and how life may have first emerged. The key to unlocking the secrets of distant planets starts right here on Earth.

The Atacama Desert harbors unique desert life with diverse microbes.New techniques separate genetic material in low-biomass ...

geologists use to better understand the environmental conditions in which truly ancient earth life may have first formed. For decades, we have wondered whether Mars, Venus and the icy moons of ...