Mysteries

Why Are Some Glaciers Blue?
sea ice
May 30th, 2015
Blue-ice areas are patches of ice where wind and evaporation have scoured glaciers clean of snow.
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What Is Buttermilk?
buttermilk
May 14th, 2014
Today, on National Buttermilk Biscuit Day (May 14), a lot of people may be wondering, what exactly is buttermilk?
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What Do Turtles Eat?
Hatchling loggerhead sea turtle
May 12th, 2014
Turtles, like the humans who love them, are a diverse bunch. There are over 300 species of this ancient reptile, and each one has its own preferred diet.
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Why Do People Keep Their Accents?
father and daughter
September 8th, 2014
Most infants begin learning a spoken language from the moment they're born. But as the brain becomes less flexible with age, it's difficult for children to master the sounds and intonation of a second language.
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How Do Tornadoes Form?
tornado-straw
May 12th, 2014
Tornadoes are one of the most destructive natural forces on Earth. Though scientists don't entirely understand how tornadoes form, they do have a good idea about the conditions that cause tornadoes to develop.
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Why Does Coffee Make You Poop?
coffee, cup of coffee, coffee mug
May 8th, 2014
It's proven that the caffeine in coffee stimulates the brain, but there's something in a cup of joe that can also jump-start the other end of the body. That's right: Coffee can make you poop.
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Why Do Dogs Wag Their Tails?
dogs-wag-tail
April 28th, 2014
It's commonly believed that dogs wag their tails to convey that they are happy and friendly, but this isn't exactly true.
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Why Is the Sky Blue?
blue-sky-110710-02
June 9th, 2014
Why is the sky blue? The light coming from the sun is made of many colors, each of which has a different wavelength.
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What Are Sweetbreads?
sweetbreads
May 12th, 2014
Contrary to what their name would suggest, sweetbreads are not sugary pastries. So, what are sweetbreads?
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Why Do Cats Like Boxes?
cats-boxes
May 8th, 2014
For pet cats, all the toys in the world can't compare to a simple cardboard box.
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