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What Causes an Itch?
What Causes an Itch? An itch occurs when something irritates the skin. If the irritation is strong enough, it could be painful. If the…
Are Sloth’s Really Lazy?
Are Sloth’s Really Lazy? In the 1600's, scientists began to use “sloth” as a name for arboreal (tree-dwelling) mammals in the jungles
Why Does a Cow Chew Its Cud?
Why Does a Cow Chew Its Cud? Chewing a cud is the way a cow digests its food thoroughly. A cow has a special…
How Does a Tape Recorder Work?
How Does a Tape Recorder Work? When recording on a tape recorder, a microphone changes the tone of your voice into electrical signals. As…
How Did the Butterfly Get Its Name?
How Did the Butterfly Get Its Name? No, one knows for certain why butterflies are called “butterflies.” There are several theories, howe