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Article III

Section 1[Judicial powers; how vested; term of office and compensation of judges.] The judicial Power of the United States, shall be vested in one Supreme Court, and in such inferior courts as the…

lock, canal

(Encyclopedia) lock, canal, stretch of water enclosed by gates, one at each end, built into a canal or river for the purpose of raising or lowering a vessel from one water level to another. A lock…

gaur, in zoology

(Encyclopedia) gaur, large wild ox of Southeast Asia, having a humplike ridge on the back. The gaur, Bos gaurus, is thought to be the largest of the wild cattle; the bulls may measure more than 6 ft…

DK Science & Technology: Machines

WHAT IS MECHANICAL ADVANTAGE? HOW IS A MACHINE’S EFFICIENCY MEASURED? LEVERSPULLEYSINCLINED PLANESGEARSFIND OUT MOREFrom can openers to cranes, machines make work easier. Simple machines include…

Parts of Speech: Pronouns: Pinch Hitters

Pronouns: Pinch HittersParts of SpeechGrammarNouns: Prime-Time PlayersVerbs: All the Right MovesConjunctions: The Ties That BindPrepositions: Good Things Come in Small PackagesAdjectives: Happy…

Teacher

What is this job like? Teachers teach children to read, write, do math, and much more. They use games, videos, computers, and other tools to teach children different subjects. Teachers show…

A Brief History of Checking

No one is quite sure when the first checks appeared. Some experts think the Romans may have invented the check about 352 B.C. But even if that were true, the idea apparently didn't catch on.…

Carbon Copies—Cloning

The cloning craze began in 1996, when scientists in Scotland astonished the world by announcing that they had successfully cloned an adult sheep. They called her Dolly. A clone is a copy of…