How do we know about ice ages? Scientists study ice. Scientists study clues from glaciers. Scientists study fossils.
What Do You Think? How did humans live during the ice age?
Photo Credit: Corbin17/Alamy Stock Photo
In the Know
Celebrate Reading
Are you learning to read? Can you read well already? … read more
In the Know
What Is Brown v. Board of Education National Historical Park?
Today, people visit the park to learn. Some schools take … read more
In the Know
What is Static Electricity?
Static electricity happens in the winter. The air is drier … read more