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.

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Regular changes in Earth's ...

Right now, a wall of ice nearly two miles thick is covering the land where Chicago used to be. And it has been moving across ...

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 ...

Computer simulation of Earth's climate evolving over one million years in response to a sudden release of carbon dioxide to the atmosphere. UC Riverside researchers have discovered a piece that was ...

A light microscope image of a planktonic foraminifera collected from the water in the Southwest Indian Ocean. (Photo by Tracy Aze, University of Leeds via Courthouse News) (CN) — Carbon is one of the ...

New research from the University of St Andrews has shed light on a crucial mechanism of lowering atmospheric CO 2 during Earth's past ice ages. Today, significant amounts of carbon escape from the ...

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, ...

Mars is half the size of Earth, with one-tenth of our planet's mass, and at the nearest point in its orbit is over 33 million miles away. Yet new research highlights the extraordinary influence the ...