What Is Antonov An-225 Mriya?
What Is Antonov An-225 Mriya? The Antonov An-225 Mriya, is a strategic airlift cargo aircraft that was designed by the Soviet Union’s Antonov Design Bureau in the...
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How Are Toothpaste Tubes Filled?
How Are Toothpaste Tubes Filled? To get toothpaste out of the tube to brush your teeth, you squeeze the tube. But how does the toothpaste get inside the tube? The...
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What Is a Hoverboard?
A hoverboard (or hover board) is a fictional levitating board used for personal transportation, first described by author M. K. Joseph in 1967 and popularized by the...
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How Do Flying Fish Fly?
How Do Flying Fish Fly? Flying fish live in the warm oceans. This unusual fish is able to glide for long distances over the surface of the water by means of two...
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What Are Checks and Balances?
What Are Checks and Balances? The U.S. Constitution is the foundational document that lays out the framework for the federal government, including what powers it has...
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How Did People Clean Their Teeth Before Toothbrushes Were Invented?
How Did People Clean Their Teeth Before Toothbrushes Were Invented? Most people today clean their teeth with brushes made of plastic and nylon. But if you had lived one...
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What Is a Whirlpool? How Does It Affect the Climate?
What Is a Whirlpool? How Does It Affect the Climate? A whirlpool is a body of swirling quickly rotating mass of water in a river or sea into which objects may be drawn,...
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How Is Chocolate Made?
How Is Chocolate Made? When the Spanish explorer Hernando Cortes came to Mexico in the 1500’s, he found the people there enjoying a dark, flavorful drink made...
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What Causes Goose Pimples?
What Causes Goose Pimples? Sometimes when we are cold or frightened, little bumps, called goose pimples, form on our skin. We may also get a prickly feeling that makes...
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How Do Mexican-Americans Celebrate Cinco De Mayo?
How Do Mexican-Americans Celebrate Cinco De Mayo? Cinco de Mayo is a holiday that recognizes the victory of the Mexican army over the French army on May 5, 1862, at the...
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