Mysteries

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.
Read More »
What Are Sweetbreads?
sweetbreads
May 12th, 2014
Contrary to what their name would suggest, sweetbreads are not sugary pastries. So, what are sweetbreads?
Read More »
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.
Read More »
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?
Read More »
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.
Read More »
What Is Kosher Food?
kosher-food
April 29th, 2014
Kosher food is not a style of cooking or a cultural menu (like Chinese or Italian food). Instead, "kosher" refers to foods that adhere to the dietary laws of Judaism, also called kashrut, as described in the Torah.
Read More »
How Do Wind Turbines Work?
Wind Power Fort Huachuca
April 28th, 2014
One of the fastest-growing sources of energy in the world, wind turbines generate electricity without emitting greenhouse gases into the environment (unlike fossil fuels).
Read More »
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.
Read More »
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.
Read More »
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.
Read More »