

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

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Maya temple: Simon Norfolk, with permission of the Ministry of Culture and Sport, Guatemala
Spider monkey: © Petra Wegner/Alamy
Hurricane: NOAA
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Maya Mystery The Maya lived in Central America. Now their cities are empty. What happened?

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Spider Monkeys Trek into the rain forests with a spider monkey expert. Better be quick, though. It's not easy to keep up with these critters. Hang out with spider monkeys on page 2 of our September 2007 issue.
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Stormy Skies Across the world, storms are getting stronger. Some places are hotter than normal. Others are colder. What's happening? Learn what may be causing stormy skies on page 10 of our September 2007 issue.
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