Build your vocabulary! We add new words for each issue.
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Mountain Lions: © Frank Lukasseck/Corbis
Beetle: © Mark Moffett/Minden Pictures
Monument Valley: © Dennis Frates
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Wild Cats
Did you know several kinds of wild cats live in North America? Come meet three of these felines.
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Doctor Bugs
Photographer Mark Moffett travels the world. He searches for interesting insects. More than a million types of insects live on Earth, so there is plenty for him to explore. Check out the beastly bugs he's seen on page 2 of our March 2008 issue.
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Rock Stars
The United States is home to some beautiful landscapes. Whipping winds, pounding water, and grinding ice carve the land into amazing shapes. Tour some of these rock stars on page 10 of our March 2008 issue.
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