Earth formed around 4.54 billion years ago. Knowing how old Earth is can be more difficult to confirm because Earth's age is not only based on the age of rocks, but also the isotopic estimates of what ...

The timing of Earth's early formation points to a planet that started out dry. So, life’s essential building blocks arrived ...

Microbes - alive and thriving -- have been found sealed within a fracture of 2-billion-year-old rock beneath Earth's surface.

A nimal life is a recent addition to Earth, relatively speaking. The planet formed about 4.5 billion years ago, with ...

Researchers found “chemical fossils” in ancient rocks containing 30-carbon steranes, a stable form of sterols present in the ...

A new model uncovers how Earth’s liquid core has sustained its magnetic field since the planet’s beginnings, offering new insights into its future. Earth benefits from the presence of a magnetic field ...

Ancient ocean grains show Earth’s carbon levels were far lower than expected during key evolutionary eras. The results challenge old theories of life’s rise and hint at patterns that could shape our ...

You probably don’t need to be reminded why we and the beautiful state of Arizona are in trouble. But just in case you do feel you need a reminder, check out this video of Arizona State Sen. Sylvia ...

Learn about how chemical fossils helped researchers identify one of Earth’s earliest animals: a sea sponge from the Ediacaran ...