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
Barack Obama Presidential Library and Museum Opens June 18, 2026
The Obama Presidential Center is a community space. It contains a public … read more
In the Know
What Lives Here?
Do you see the orange fish? This is a garibaldi … read more
In the Know
What Is Air Quality?
When the air quality is unhealthy, being outside can make … read more