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"It's fun to think about questions like 'Would you rather search for life on Mars or on Mercury?' World Book has gathered dozens of such questions, on topics including outer space, prehistoric animals, wonders of the world, and more. To help you...

Follow as life unfolds in the United States and Canada under the Milky Way.

Provides answers to a diverse collection of over one thousand commonly asked questions, covering such areas as animals, buildings, transportation, food, the human body, and going green.

What happens when you burp in space? Can you comb a hairy doughnut? Is the platypus even a real animal? Join us for a mind-boggling look at the record-breaking world around us. From the science of slam dunks and the smelliest substances to...

Find out about the never-ending storms on Jupiter. Learn about the towering volcanoes of Venus -- all 1,600 of them, and see the Valles Marineris on Mars -- a canyon that is ten times longer than Earth's Grand Canyon. Based on recent research and...