Iceland has volcanos. This is a field of lava. It has dried.
Photo Credit: Mike Gee
In the Know
Getting to Know Dolphins
Dolphins make many sounds. They make clicks, whistles, and squeals. … read more
In the Know
How Does a Thermos Work?
A thermos keeps drinks cold in the same way. The … read more
In the Know
Climbing the Tallest Mountains
When people climb tall mountains, they bring oxygen. They carry … read more