Iceland has volcanos. This is a field of lava. It has dried.
Photo Credit: Mike Gee
In the Know
Mammals Cool Themselves in Unique Ways
Echidnas are small, spike-covered mammals. They live in areas with … read more
In the Know
What Is Immigration?
Sometimes people move to a new country. But they also … read more
In the Know
Similar but Different: Reptiles and Amphibians
Reptiles are born on land. They have lungs only. They … read more