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.

If you've seen any of the "Ice Age" animated Disney movies, we have some bad news: You don't know the real ice age. For the first time since 1972, NASA is putting science experiments on the moon in ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. How many ice ages has the Earth had, and could ...