Build your vocabulary! We add new words for each issue.
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volcanoes: John Stanmeyer
parrot: © Kristof Degreef/
Shutterstock
Billy Demong:
© Alexanderr Hassenstein/
Bongarts/
Getty Images
family tree: © John Woodcock/
iStockphoto
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Active Earth
Earthquakes shake it. Volcanoes rock it. Explore Earth's action from the inside out.
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A Passion for Parrots
Parrots are smart and beautiful. Over the years, people have trapped millions to sell as pets. In this issue, travel with a scientist to Peru and see what's being done to save wild parrots.
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The Winning Edge
To compete in the winter Olympics, skier Billy Demong needs skill, strength—and science. Learn how Newton's laws of motion help Demong gain the winning edge.
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Family Ties
What makes you who you are? Part of the answer may be hidden in your family's past. In this issue, learn how to be your own detective and find the clues to your family tree!
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