How Does a Cat Purr?
How Does a Cat Purr? Unlike most other animals, cats have two sets of vocal cords in their throats, one above the other. Each set produces different sounds. Many cat...
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How Did the Tarantula Get Its Name?
How Did the Tarantula Get Its Name? The big hairy spiders called tarantulas get their name from a large wolf spider found around the city of Taranto in southern Italy....
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What Are Goose Pimples?
“Goose pimples” are little bumps that sometimes appear on your skin when you are frightened or cold. Goose pimples are caused by tiny muscles at the hair roots in the...
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How Is Chewing Gum Made?
How Is Chewing Gum Made? Chewing gum was made and sold in America from 1848 but it was very different to the gum we know today. It was made from spruce gum. Mr. Thomas...
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How Does Hair Gel Work?
How Does Hair Gel Work? Hair gel is a hairstyling product that is used to stiffen hair into a particular hairstyle. Cationic polymers are one of the main functional...
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What Are Fingerprints?
What Are Fingerprints? A fingerprint is merely a record of the pattern of a person’s finger. Look at the tips of your fingers. Do you see the loops and swirls the...
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What Are Owl Pellets?
What Are Owl Pellets? Owls swallow tiny prey animals, such as mice, in one gulp—fur, bones and all. The indigestible fur and bones are packed together inside the...
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When Were Roller Skates Invented?
When Were Roller Skates Invented? The first roller skates were made in 1790 by Joseph Marlin, a musical-instrument maker who lived in Belgium. Several...
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Why Do We Say “god Bless You” after a Sneeze?
Why Do We Say “god Bless You” after a Sneeze? There are many explanations for the custom of saying “God bless you” when someone sneezes. The saying probably...
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Are White Eggs Better than Brown Eggs?
Are White Eggs Better than Brown Eggs? Some people prefer white-shelled eggs. Other people say that brown-shelled eggs are more wholesome to eat. The truth is that the...
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