Did You Know? The biggest volcanoes in the world can be found deep under the sea!

Try It! Build and explode your own volcano.

By the Numbers Make a map of an invisible mountain range.

Spotlight on Dive and Discover, a Web site that invites you to come along on a real-life undersea expedition.

You can ask more, discover more, explore more — with all-new experiments, links, resources and ideas.

Cool Science Stuff: Make an underwater volcano, visit a virtual cave, and much more. Then go to Brain Buster to figure out how all the continents once fit together in one huge super-continent.

Resources: Here are some exciting ways to build on your child’s interest in volcanoes and the changing Earth.

Teachers: find out why and the National Science Education Standards.

Super-hot liquid from inside the Earth mixes with sea water to create a black smoker.