First, what is an ice age? It's when the Earth has cold temperatures for a long time – millions to tens of millions of years – that lead to ice sheets and glaciers covering large areas of its surface.

UC Riverside researchers have discovered a piece that was missing in previous descriptions of the way Earth recycles its carbon. As a result, they believe that global warming can overcorrect into an ...

On its own, Earth would shift toward another ice age in about 10,000 years, scientists say. But humanity’s greenhouse gas emissions may have radically shifted the climates trajectory. (Santa Barbara, ...

The only thing scarier than a Xenomorph is this: One hundred years in the future, we're still watching Ice Age: Continental Drift. Without context, the reference might not make a lick of sense.

New research suggests Earth’s climate can swing wildly on surprisingly short timescales — even during hot, ice-free greenhouse periods. By studying ancient sediments from the Late Cretaceous, ...

Europe's brown bears repeatedly reshaped their jaws during the Ice Age, a flexibility that may have helped them outlast cave ...