

Build your vocabulary! We add new words for each issue.

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Great Wall: ) Keren Su/China Span
Toucan: ) Frans Lanting
Lobster: ) Gary Bell/zefa/Corbis
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Wall of Wonder This summer, the Olympics will be in China. Explore that vast land by walking the Great Wall.

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Layers of Life The rain forest has four layersthe forest floor, the understory, the canopy, and the emergent layer. Each layer is full of plants and animals. Climb through these "Layers of Life" on page 2 of our May 2008 issue.
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Animal Armor Shells are more than just pretty things on a sandy beach. They are armor for some of the toughest creatures on Earth. Check out how these creatures use their armor on page 18 of our May 2008 issue.
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