How did complex life survive when Earth was frozen over? Scientists say tiny meltwater ponds on ancient ice may have been the ...

For decades, scientists believed the Arctic Ocean was sealed under a massive slab of ice during the coldest ice ages — but new research proves otherwise. Sediment samples from the seafloor, paired ...

When the Earth froze over, where did life shelter? MIT scientists say one refuge may have been pools of melted ice that ...

The ocean around Antarctica is rapidly getting saltier at the same time as sea ice is retreating at a record pace. Since 2015 ...

So why isn’t the Earth covered in ice right now? It’s because we are in a period known as an “interglacial.” In an ice age, temperatures will fluctuate between colder and warmer levels. Ice sheets and ...

Earth has not always been so hospitable to live. During several ice ages, the planet's surface was almost completely frozen over, creating what has been dubbed "Snowball Earth".

As glaciers retreat due to a rise in global temperatures, one study shows that detailed 3D elevation models could drastically ...

Earth was also much drier, and sea level was much lower, since most of the Earth’s water was trapped in the ice sheets. Steppes, or dry grassy plains, were common.