showOdiogoReadNowButton (”56747″, “Why Does the Skin Tan?”, “6607″, 290, 55);
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Go to any beach and you are sure to find sun worshipers baking their bodies in the sun, totally oblivious to the fact that the sunburns they acquire may develop into skin cancers 10 to 20 years later. In most parts of [...]
showOdiogoReadNowButton (”56747″, “Why is a Dog’s Nose Black and Wet?”, “6458″, 290, 55);
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Most dogs have black noses, not all. The noses of Vizslas and Weimaraners, for example, are closer to their coat colours. And it’s not unusual for puppies to start out with pink noses that darken as they mature.
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In [...]
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Sleepwalking or somnambulism runs in families, indicating a genetic component. Studies show that it is also associated with sleep deprivation, fever, stress and intake of drugs, especially sedatives, hypnotics, antipsychotics, stimulants and antihistamines. Somnambulism occurs because normal physiological systems are active even [...]
showOdiogoReadNowButton (”56747″, “Why Do Parts of Our Body ‘Fall Asleep’?”, “6030″, 290, 55);
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The weird “separate” sensations we experience when a particular limb “falls asleep” are the result of nerves under pressure.
For example, if an arm has fallen asleep, it is most likely that the person had slept on the arm. The [...]
showOdiogoReadNowButton (”56747″, “Why Do Our Eyelids Sometimes Twitch?”, “5920″, 290, 55);
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This irritating phenomenon, affecting millions of people, is not a serious condition for most. It is an involuntary muscle spasm around the eyelid, associated with an abnormal function of the “basal ganglion”, the brain area responsible for controlling the muscles.
Eye twitching [...]
showOdiogoReadNowButton (”56747″, “Why Does the Body Temperature Rise During Fever?”, “5684″, 290, 55);
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Normal body temperature fluctuates between 97°F (36.1°C) and 100°F (37.8°C), with the average being 98.6°F (37°C). When our body temperature rises above 98.6°F, we call it fever. Our normal body temperature is maintained by a certain part of the [...]
showOdiogoReadNowButton (”56747″, “Why Drunk People Take Risks”, “5644″, 290, 55);
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New brain imaging research shows that social drinkers have decreased sensitivity in brain regions involved in detecting threats, and increased activity in brain regions involved in reward.
After alcohol exposure, threat-detecting brain circuits can’t tell the difference between a threatening and a non-threatening [...]
showOdiogoReadNowButton (”56747″, “Why do Fingernails Grow Faster than Toenails?”, “5581″, 290, 55);
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Dermatologists confirm that the rate of fingernail growth outstrips that of toenails, with the former lengthening anywhere from slightly faster to perhaps three times as fast. The American Academy of Dermatology puts the average rate of fingernail growth at about [...]
showOdiogoReadNowButton (”56747″, “Why Do Snakes Stick Out Their Tongue?”, “4749″, 290, 55);
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Contrary to popular notion, snakes don’t sting or use their forked tongues as weapons. The tongues are actually harmless, even though the sight of a snake sticking out its tongue may seem scary.
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A snake sticks out its tongue [...]
showOdiogoReadNowButton (”56747″, “Why Scratching Brings Relief ?”, “3951″, 290, 55);
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Oh, it brings such blessed relief and now scientists can tell you why — scratching an itch temporarily shuts off areas in the brain linked with unpleasant feelings and memories.
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“Our study shows for the first time how scratching may relieve itch,” [...]
showOdiogoReadNowButton (”56747″, “Why Can’t We Write With Both Hands Simultaneously?”, “3509″, 290, 55);
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The problem lies not only in writing two different words together with both of our hands, but writing anything simultaneously at all.
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This is due to the fact that most people are adept at using only one hand. In fact, [...]
showOdiogoReadNowButton (”56747″, “Why Does Hair Keep Growing?”, “3480″, 290, 55);
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It is really intriguing that hair, although composed of dead cells, keep growing. The secret of its growth lies in the hidden part of hair that remains under the skin.
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Hair originates from a ring of dividing cells which later die out [...]
showOdiogoReadNowButton (”56747″, “Why Do Gas Bubbles Form Beneath Champagne?”, “3475″, 290, 55);
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Gas bubbles that form in a liquid, including the vapour bubbles that form as water boils, require tiny flaws (lack of homogeneity) to seed them. A baby bubble then adds other pockets of gas and grows, and once it [...]
showOdiogoReadNowButton (”56747″, “Why We Shiver When it’s Cold”, “3462″, 290, 55);
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CHICAGO: Nerves that sense the icy slap of an arctic wind or just a cool breeze take their orders from a single protein, US researchers said, shedding new light on how we experience cold.
Prior studies have suggested cold-sensing neurons are specialized, [...]
showOdiogoReadNowButton (”56747″, “Why Do Bats Hang Upside Down?”, “3434″, 290, 55);
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Bats are the only mammals that can fly. Their feet are not strong enough to support standing or walking for a long time. They have a wingspan ranging from six feet to six inches.
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But the wings don’t produce enough lift to [...]
showOdiogoReadNowButton (”56747″, “Why Do We Get Headaches?”, “3236″, 290, 55);
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Headaches — barring migraine headaches, which are of a different type — are a painful symptom of an underlying systemic problem or cause.
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There may be various reasons why one may develop a headache, each of which has a different trigger mechanism. [...]
showOdiogoReadNowButton (”56747″, “Why Do We Get Winter Blues?”, “3183″, 290, 55);
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Sunlight is crucial to our health and when we don’t get enough of it, both our mood and our health suffer. This is especially true in regions where temperatures dip to sub-zero levels and sunlight is scarce.
But why does this [...]
showOdiogoReadNowButton (”56747″, “TELL ME WHY”, “2702″, 290, 55);
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Q. Why do people need to sleep?
A.Sleep is vital for giving your body rest and preparing for the next day. It’s a mini-vacation for your body. Sleep is as important as breathing or eating. In fact, people can survive longer without food than they [...]
showOdiogoReadNowButton (”56747″, “Why Do We See One of Everything Despite Two Eyes?”, “2451″, 290, 55);
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Having two eyes is certainly better than having just one because two eyes provide us with stereo vision and depth perception —things that wouldn’t have been possible with just one eye.
With a gap of around two and [...]
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A slice of apple becomes reddish or brownish after a few minutes because of a chemical reaction called oxidation brought about by the oxygen in the air.
Apples and many other fruits contain chemicals called polyphenolic compounds. Phenols are colourless, [...]
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