

Stirring ingredients into your vocabulary doesn't have to be an ordeal. Just follow this route to our glossary. 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 The face of Mars is alive with action. Asteroids pound the red planet, creating craters on its surface. Fierce sandstorms whip up rocks. Explore the changing face of Mars.

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Pyramid Puzzle There's a mummy missing from the Great Pyramid. Archaeologist Zahi Hawass has been searching deep inside the pyramid, yet he still cannot find the mummy. Find out if he can solve this pyramid puzzle on page 2 of our October 2007 issue.
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Owls Owls are built to hunt. They are some of the best hunters on Earth. They owe their deadly success to sharp claws, keen hearing, silent wings, and more. Travel with scientist Denver Holt on page 12 of our October 2007 issue as he tracks these amazing birds.
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