Find out what causes volcanoes to erupt and how scientists study them.
Volcanoes, tsunamis, earthquakes... Examine how plate tectonics affect our world!
Visit a scientist's lab to see how he creates a magma chamber!
Take an expedition across the Martian landscape with this video, then test your knowledge!
Water is a precious resource, and all things need water to survive.
Send a note to a friend with these earthy letterheads.
Test your knowledge about our planet Earth with this quiz.
Take a peek at our planet's layers, learn what secrets rocks reveal, and gain a long view of history.
There are no "volcano" .
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