Why Do Your Eyes Water When You Slice Onions?
Why Do Your Eyes Water When You Slice Onions? Onions contain strong-smelling oil. When the onion is peeled and cut, this oil escapes into the air in the form of vapor...
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How Are Stick-on Bandages Made?
How Are Stick-on Bandages Made? Most stick-on bandages are made of water-proof plastic. The bandages have gauze pads in the center, and they usually have holes in them...
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What Does an Elephant Uses Its Tusks For?
What Does an Elephant Uses Its Tusks For? An elephant uses its long tusks to dig up roots for food and as weapons of defense. With its tusks it also can lift and carry...
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Do All Crabs Walk Sideways?
Do All Crabs Walk Sideways? If you’ve ever seen crabs moving along the shoreline, you’ve probably noticed that they move differently than human beings....
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What Is the World’s Tallest Grass?
What Is the World’s Tallest Grass? The world’s tallest grass is bamboo. Even though these woody poles are very tall and hard, they are actually in the same family...
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Who First Invented Paper?
Who First Invented Paper? The word “paper” is etymologically derived from papyros, Ancient Greek for the Cyperus papyrus plant. Papyrus is a thick,...
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What Is a Will-o’-the-wisp?
A will-o’-the-wisp, or “foolish fire” is an atmospheric ghost light seen by travelers at night, especially over bogs, swamps or marshes. It resembles...
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Do Kangaroos Box?
Do Kangaroos Box? Kangaroos do often fight with one another, but they don’t box the way a prizefighter does, by throwing punches. Kangaroos fight by biting and...
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Why Do We Have Eyelashes and Eyebrows?
Eyebrows and eyelashes keep dust from getting into our eyes. Eyelashes are sensitive to touch. They make the eyelid close automatically when a foreign object suddenly...
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When Do Birds Migrate?
When Do Birds Migrate? Millions of birds of many different varieties migrate at the end of summer. With unfailing regularity they leave the regions where they were born...
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