Where Does Mold Come From?
Food that is left in a warm, damp place for several days often becomes covered with a fuzzy patch of mold. Mold is really a tiny, simple living microorganism, a part of...
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Why Do We Have Saliva in Our Mouths?
Why Do We Have Saliva in Our Mouths? When you take a bite of food, a watery fluid called “saliva” pours into your mouth. In fact, just looking at or...
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When Was the Hot Dog on a Bun Invented?
When Was the Hot Dog on a Bun Invented? The first hot dogs on buns were served at the Chicago World’s Fair in 1893, the Colombian Exposition brought hordes of...
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How Do Chickens Chew Their Food?
Chickens, like all other birds, have an unusual way of chewing their food. The work of chewing is done by the gizzard, the part of the bird’s stomach where the...
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Why Did Dinosaurs Die Out?
Why Did Dinosaurs Die Out? Since their discovery in the nineteenth century, the reason for the dinosaurs’ demise has been a matter of speculation and debate. No...
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