Scientists have discovered potential patches of Earth's ancient crust ... Earth's atmosphere went through a sequence of oxygenation episodes fueled by geological and biological interactions ...

The oxygenation of the Earth’s atmosphere and oceans and the emergence and evolution of life are pivotal episodes in the planet ... light on the evolution of ancient marine environments.

This ancient period of deep freeze, known as the Neoproterozoic Era, or “Snowball Earth,” lasted from about 1 billion to 543 million years ago. During that time, landmasses consolidated into a ...

Ancient Earth movements, probably connected with the initial unzipping of the Atlantic Ocean over 200 million years ago, caused long fault zones to form and mud with fossils was sucked into the ...

An ancient slab of Earth's crust buried deep beneath the Midwest is sucking huge swatches of present-day's North American crust down into the mantle, researchers say. The slab's pull has created ...