The ice cores could offer clues about a period known as the Mid-Pleistocene Transition that has long puzzled scientists ...

Scientists break down the reasons why days are getting shorter—and the mystery they're still trying to solve about Earth's ...

It's another meteoric rise for what's called the largest piece of Mars on Earth. The largest piece of Mars ever found on ...

A 259-million-year-old fossil skull of Yinshanosaurus angustus has been found, filling a key evolutionary gap in ...

Research data suggests humans may have nearly gone extinct almost 1 million years ago, but scientists aren't sure why.

New data shows that CO2 levels have broken through 430 parts per million, an indication that human-caused global warming will continue to warp the environment.

Imagine the prehistoric world and the challenges of survival during the age of dinosaurs 200 million years ago.

Fresh paleomagnetic data from Italy shows Earth's crust tipped and corrected itself 84 million years ago, confirming true polar wander. (CREDIT: NASA’s Scientific Visualization Studio) ...

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Earth’s largest mass extinction, often referred to as the “Great Dying,” occurred about 252 million years ago. Massive volcanic eruptions triggered catastrophic climate changes that altered ...

How did the dinosaurs go extinct? Most dinosaurs suddenly went extinct about 66 million years ago after an asteroid struck Earth.