

Stirring ingredients into your vocabulary does not have to be an ordeal. Just follow this route to our glossary. 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 Just 50 years ago, people imagined life in 2009 would be full of flying cars, hard-working robots, and cities on the moon.

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Living Color They flitter. They flutter. And they fill the air with color. Follow the flight of butterflies on page 2 of our April issue and see how butterflies keep plants in bloom.
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Arctic Adventurer Exactly 100 years ago, African-American explorer Matthew Henson did what no one had ever done before. He braved freezing 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 Armies of creatures are on the move in places they don't belong. They kill the plants and animals that get in their way. Is there a way to stop them? Learn about invasive species on page 14 of our April issue.
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