Mysteries

Why Do Dogs Have Whiskers?
dog-whiskers
April 14th, 2014
For humans, touch is a sense most often associated with the fingers. But man's best friend, the dog, touches the world a different way — with his face.
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How Do Clouds Form?
Polar Stratospheric Clouds Over Antarctica
April 11th, 2014
When the sun heats water in the oceans, rivers, lakes and other sources, some of it evaporates, or transforms from liquid water to water vapor. This is the first step in cloud formation.
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What Is Xanthan Gum?
A bowl of chocolate and vanilla ice cream
April 9th, 2014
Xanthan gum helps salad dressing pour easily from the bottle, makes ice cream taste creamier and allows liquid cosmetics to stay blended while on the shelf.
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How Do Dolphins Sleep?
A clymene dolphin, new species, natural hybridization, evolution
April 14th, 2014
Dolphins sleep with one eye open, and with half their brain wide awake, researchers have found.
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What Is Dry Socket?
dry-socket
April 11th, 2014
If you've ever had a tooth pulled, then you might be familiar with a severely painful — and aptly named — condition known as dry socket (alveolar osteitis).
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How Do Peanuts Grow?
peanut
March 31st, 2014
Despite their name and appearance, peanuts are not tree nuts like walnuts and pecans — they're part of the legume family of plants, which includes beans, lentils, peas and other familiar foods.
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What Is Jock Itch?
jock-itch
March 31st, 2014
Itchy, contagious and in a place you'd rather not mention, jock itch (tinea cruris) is a fungal skin infection that affects the genital region.
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What Is Quinine?
mosquitoes-malaria
April 14th, 2014
Found in the bark of the cinchona tree, quinine is a compound with many medicinal applications, including fever-reducing, painkilling and anti-inflammatory properties. It was also the first treatment for malaria.
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What Is Credit Card Skimming?
skimming
April 11th, 2014
The FTC estimates that 9 million Americans have their identity stolen every year in credit-card skimming or similar kinds of scams. The ease with which skimmers operate, however, raises several questions about the security of card transactions.
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How Do Pineapples Grow?
pineapple
March 31st, 2014
Contrary to what some people think, pineapples don't grow on trees — they grow out of the ground, from a leafy plant.
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