Roughly 252 million years ago, Earth experienced its deadliest known extinction. Known as the Permian–Triassic Mass ...

In this video, we take you on a journey to the Pleistocene Epoch, a time when Earth looked vastly different from today. Massive ice sheets stretched across North America, Europe, and Asia. Glaciers ...

Earth tipped over on its side and back between 79 million and 86 million years ago, a study shows. The planet tilted by 12 degrees — which would've moved New York City to where Florida is right now.

The researchers' idea that Earth once had rings comes from reconstructions of Earth's plate tectonics from the Ordovician period—which ran between 485.4 million years and 443.8 million years ago ...

Scientists can then use these magnetic fingerprints to figure out where the poles were millions of years ago. As Joe Kirschvink of the Earth-Life Science ... dated close to 80 million years ago.

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

Earth may have sported a Saturn-like ring system 466 million years ago, after it captured and wrecked a passing asteroid, a new study suggests. The debris ring, which likely lasted tens of ...

Anyone living on Earth between 720 million and 635 million years ago probably would've needed a jacket. Geologists have long suspected that Earth's temperature dropped dramatically during this ...

If you were to look up from Earth some 466 million years ago, you might have seen a gleaming ring stretching across the sky, some scientists say.

In a discovery that challenges our understanding of Earth's ancient history, researchers have found evidence suggesting that Earth may have had a ring system that formed around 466 million years ...

The hothouse Earth at the end of the Triassic was most likely to be caused by supermassive volcanic eruptions, say our readers, ... Earth was a hothouse 201 million years ago, ...

Earth may have had a ring made up of a broken asteroid over 400 million years ago, a study finds. The Saturn-like feature could explain a climate shift at the time.