

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

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Space City: © Topic Photo Agency/ Age Fotostock
Butterfly: © Justin Black/ Shutterstock
Henson: Robert E. Peary Collection, National Geographic Society
Starlings: © Pal Teravagimov/ Shutterstock
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Back to the Future Fifty years ago, people thought life in 2009 would have flying cars, robots, and cities in space.

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Living Color They flitter. They flutter. They fill the air with color. Follow the flight of butterflies on page 2 of our April issue to see how butterflies keep plants in bloom.
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Matthew Henson Exactly 100 years ago, African-American explorer Matthew Henson braved cold, ice, and racism to reach the North Pole. Explore with Henson on page 8 of our April issue.
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The Invaders Creatures are on the move in places they don't belong. They kill the plants and animals that get in their way. Learn about invasive species on page 14 of our April issue.
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