resulting in a frigid "Snowball Earth." But they've argued quite a bit about just how icy the planet got — specifically, ...

Black ice is hard to spot because it freezes clear. Snow is easy to see because it's white. Ice takes on white or cloudy ...

A major winter storm covers Washington, DC, in snow. Residents of the US capital take part in a giant snowball fight and ...

"Glaciation is the simplest explanation for erosion across a vast area during the Snowball Earth period since ice sheets were believed to cover most of North America at that time and can be ...

Virginia Tech study unveils 2 billion years of evolution, highlighting the 'boring billion,' Snowball Earth, and ancient marine life.

D.C.’s big snowball fight is in its 15th year and Monday’s anniversary celebration is not complete, of course, without a ...

The Earth became almost completely covered in ice during the longest and most severe ... But the critical period leading up to Snowball Earth was thought to be missing because the rock layers ...

WATCH: Snowball fight breaks out in Collierville ...