Ice Age

Can you imagine a time long, long ago—about 2.4 million years ago—when the Earth was much colder than it is now. This was called an Ice Age! Huge, thick sheets of ice called glaciers cover most of the land, even stretching down into places that are warm today, like parts of North America, Europe, and Asia. It was a time of  giant, chilly adventures, full of massive animals, freezing ice, and mysteries. Animals that have been buried for millions of years are giving us an idea of what life was like.

The Earth’s climate can change, sometimes getting colder or warmer. The Ice Age happened because the Earth started to get much colder.  This freezing can be caused by a few things like the tilt of the Earth changing, the eruption of a massive volcano or the Earth’s path around the sun changing. It could have been a combination of more than one of these things.

During the Ice Age, many of the animals that roamed the Earth were very different from what we see today. There were massive woolly mammoths, with long, curly hair and big, curved tusks. They looked like giant, furry elephants! There were also saber-toothed cats, with teeth so long they looked like swords, and giant ground sloths that could grow as tall as a house! Some areas even had mastodons, which were like distant cousins of the mammoth.

Some mammoths have been found in a special kind of frozen ground called "permafrost." Permafrost is soil that has been frozen for many years. It works like a giant underground freezer. Sometimes, when the ice melts the frozen remains of Ice Age animals get uncovered. These animals may have disappeared long before our time, but the permafrost has kept them preserved so that scientists can study them. We can learn a lot about what they looked like and how they lived! It's like discovering a prehistoric treasure in the ice! Just a few years ago an entire wooly mammoth baby was found in Canada.

The Ice Age didn’t last forever. As the Earth started to warm up, the ice melted, and many of these amazing creatures disappeared. It ended because Earth slowly started to warm up again. The Earth’s orbit and tilt changed, and the volcanoes stopped blocking sunlight so much. The ice began to melt, and temperatures got warmer, allowing plants, animals, and humans to move to places that were once too cold. What do you think it would have been like to live during the Ice Age?