Build your vocabulary! We add new words for each issue.
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Mars: © Kees Veenenbos
Pyramid: Goodshoot
Owl: © Myron Jay Dorf/Corbis
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The Changing Face of Mars
Mars is alive with action. Explore the red planet.
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Pyramid Puzzle
There's a mummy missing from the Great Pyramid. Archaeologist Zahi Hawass has searched long and hard for it. Can he solve this pyramid puzzle? Find out on page 2 of our October 2007 issue.
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Owls
Owls are some of the best hunters on Earth. Their success comes from sharp claws, keen hearing, silent wings, and more. Scientist Denver Holt tracks these hunters on page 12 of our October 2007 issue.
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