The Green Kingdom

Seeds, stems, and salad stuff

All the foods we call vegetables come from some part of a plant. Lima beans, peas, and kidney beans are plant seeds. Radishes, carrots, and beets are plant roots. Onions are plant bulbs. Potatoes…

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As Good As Old

STREET OF STEPS

Part of the modern city of San Juan, Puerto Rico, is Old San Juan. Here, the government has rebuilt and restored many old buildings and streets. Now, tourists and others can see what Old San Juan…

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How Things Work

An airplane pushed by gas

Have you ever wondered why certain kinds of airplanes are called jet planes? The word jet means a stream of something that’s shot out of an opening. And that’s how a jet plane flies—by squirting…

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