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.

Scientists trace ancient deep-sea changes in the Southern Ocean to explain how rising CO₂ helped warm Earth after the last ...

Around 20,000 years ago, Earth was very, very cold. Global temperatures were 10 degrees Fahrenheit colder than they are today and most of North America was covered in ice. That ice was almost half a ...

New data shows Ice Age hunters used Mezhyrich’s mammoth-bone shelters briefly, highlighting adaptations in a volatile, frigid ...

Beginning around 2.5 million years ago, Earth entered an era marked by successive ice ages and interglacial periods, emerging from the last glaciation around 11,700 years ago. A new analysis suggests ...

An artist's conception of "Snowball Earth," when the planet was either completely or largely covered in ice hundreds of millions of years ago. Credit: Mark Garlick / Science Photo Library / Getty ...

An encounter with a cold cloud of gas and dust could have caused our planet's "protective giant bubble" to draw back. When you purchase through links on our site, we may earn an affiliate commission.

New images from the North Sea show never-before-seen landforms that were carved by a single, colossal ice sheet 1 million years ago and subsequently buried beneath a thick layer of mud. When you ...

Two million years ago, an encounter with a cold cloud of gas and dust could have caused our planet's "protective giant bubble" to draw back, potentially cooling our planet, new research claims. When ...

Mars’s Coloe Fossae reveals a landscape shaped by ancient ice ages, with deep valleys, cratered terrain, and frozen debris ...