A layer of rock just 520 million years old sat directly on top of ancient rock dating back 1.4 to 1.8 billion years.

Earth history, as a scientific topic, encompasses the reconstruction and analysis of the planet’s physical, chemical, and biological evolution from its formation ~4.54 billion years ago to the present ...

In the whole history of Earth's climate, few events are as extreme as those that geologists call "Snowball Earth." ...

Millions of people around the world will pause on Tuesday, at least for a moment, to mark Earth Day. It's an annual event founded by people who hoped to stir activism to clean up and preserve a planet ...

Add Yahoo as a preferred source to see more of our stories on Google. Rocks can hold clues to history dating back hundreds of millions of years. Christine S. Siddoway Around 700 million years ago, the ...

The first Earth Day was in April 1970. About one billion people celebrated across 193 countries. The day’s goal was to encourage governments, companies, and individuals to support a healthy ...

Researchers studying the deep biosphere, Earth’s largest ecosystem, have found evidence that life thriving miles below the planet’s surface may have played a far bigger role in shaping atmospheric ...

The field of paleoenvironmental geochemistry examines the chemical signatures preserved in Earth’s ancient rocks to reconstruct past environments and decipher the evolution of our planet’s surface ...

Exploring LIDAR: Tech using lasers to reveal the deep history beneath our world’s surface. The Channeled Scablands of the Pacific Northwest hide an astonishing secret. Evidence of a massive flood that ...