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How Do Snakes Swallow Large Animals? A snake's jaw is rigged with tendons, muscles, and ligaments that give it a gymnast's flexibility. The jaws do not dislocate, however.
Is Antibacterial Soap Really Necessary? Beyond easing your mind, the more expensive products will indeed clean your hands if you use them right, but plain old soap and water is still a good way to go.
How Many Muscles Does a Human Have? Muscular tissue makes up 35-40 percent of our body weight and comes in several types of packages-skeletal, cardiac and smooth.
How Does Squinting Help Us See? Squinting squishes the eyeball slightly to correct for a focus point that misses the mark.
Why Do We Snore? Vibrating throat muscles are responsible for snoring.
What Was the First Museum? The history of the public museum.
How Does an Etch A Sketch Sketch? The secret behind the Etch A Sketch invention.
Why Does Pain Make People Scream? Non-verbal communication and the purpose of pain vocalizations.
How Does Humidity Affect Evaporation? An explanation of relative humidity and its relation to evaporation.
Why is Quartz Used in Watches? Quartz crystals maintain a precise frequency standard, which helps to regulate the movement of a watch or clock, thus making the timepieces very accurate.
What is Winter Solstice? Winter solstice is the shortest day of the year in the Northern Hemisphere and marks the official beginning of winter. Find out why.
How Did America Get its Name? The naming of America goes to show that it pays to have a good publicist.
Do Pigs Sweat? Pigs do have a few sweat glands, but they're not very useful for temperature adjustment. So ...
What is a Stroke? A stroke can be any one of three significantly different problems with blood supply to the brain.
Does Cold Weather Cause Colds? The misconceptions and causes of the common cold.
How Much Does the Soul Weigh? In 1907, Duncan MacDougall devised experiments that he expected would actually measure the soul. His result: 21 grams. But...
Does a Water Molecule Have a Lifespan? Hydrogen atoms are constantly shuffling from one molecule to the next, pairing with a particular oxygen for only a millisecond. This might be described as one trio's lifespan, but ...
Can Oil Extraction Cause Earthquakes? Yes, but not the kind of quakes you hear about in the news.
What Causes Hiccups? The hiccup reflex and several cures.
Why Do We Blink? The blinking reflex and its causes.
Why are Ears Shaped So Strangely? Those external folds of cartilage and skin, called the pinna, have important resonant properties that modify high-frequency sound waves entering the ear before funneling them to the middle ear.
What's the Temperature in Outer Space? Is space cold or hot? It depends on whether it's sunny or not.
Is the Bermuda Triangle Really Dangerous? There are logical explanations for the planes and ships lost in the Bermuda Triangle. Not that logic has anything to do with the legends.
How Did Earth Get Its Name? Nobody knows who named Earth, but we know a little bit about where the word originated.
How Long Does it Take to Make Petrified Wood? Over millions of years in an oxygen-deprived environment, minerals crystallize within the wood's cellular structure, forming the stone-like material known as petrified wood.
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