How Can Polar Bears Stand Cold Water?
How Can Polar Bears Stand Cold Water? Despite arctic cold, the polar bear can swim in freezing water or walk about wringing wet, and still stay warm. The polar...
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What Are the Panama Canal Locks?
What Are the Panama Canal Locks? The Panama Canal locks are a kind of water “stairway” that crosses the Isthmus of Panama and connects the Atlantic and...
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What Trees Live Longest?
What Trees Live Longest? The oldest trees in the world are the bristlecone pines. These twisted, gnarled trees live high in the White Mountains of California. They grow...
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How Many Eggs Does a Chicken Lay in a Year?
How Many Eggs Does a Chicken Lay in a Year? A typical egg laying hen can lay as many as 276 eggs a year. A laying hen’s lifetime productivity depends on many factors,...
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How Do Brazil Nuts Grow?
How Do Brazil Nuts Grow? Brazil nuts grow on tall evergreen trees found in the forests of Brazil. The trees bear large, round seedcases that resemble coconuts. Each...
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Where Do Puddles Go When They Dry Up?
Where Do Puddles Go When They Dry Up? When we say that a puddle has dried up, we mean that the water in it has evaporated. When water is exposed to air, some of it...
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How Fast Does the Hair on Your Head Grow?
How Fast Does the Hair on Your Head Grow? The hair on your head grows about half an inch each month. Your hair does not grow at the same rate throughout the day. It...
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Why Do Our Noses Run When We Cry?
Why Do Our Noses Run When We Cry? When a person cries, tears make the nose run. Glands under our upper eyelids are producing tears all the time. These tears are...
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Why Is It so Easy to Tear a Newspaper Vertically but Not Horizontally?
Why Is It so Easy to Tear a Newspaper Vertically but Not Horizontally? The principal raw material required for the manufacture of paper is cellulose pulp. It is...
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Who Is a Town Crier?
A town crier is a person who is employed by a town council to make public announcements in the streets. The crier can also be used in court or official announcements....
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