

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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Cheetah: Frans Lanting/Minden Pictures
Shark: © James D. Watt/SeaPics.com
Desert: Frans Lemmens/Getty Images
Sacagawea: Mark Thiessen
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On the Move All animals move. Big or small, fast or slow, animals walk, run, creep, crawl, fly, and swim. This article introduces you to some of the oddest ways that critters get around.

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Swim With Sharks Sharks have a scary reputation. But do they deserve it? Maybe not. Did you know humans are more of a danger to sharks than they are to us? In fact, we've put some sharks at risk of dying out. Swim with sharks on page 2 of our March 2007 issue.
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Earth's Extremes Earth is an extreme place. There are towering mountains and deep canyons. Some places freeze all year round. Other places are so hot most things can't survive. Explore these and other extreme places on page 6 of our March 2007 issue.
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Who Was Sacagawea? Sacagawea was fearless. She traveled thousands of miles with Lewis and Clark across the West. They explored new lands and crossed tall mountains. Her legend still lives on today. Follow her journey on page 20 of our March 2007 issue.
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