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Can Wild Animals Really 'Sense' Fear in Other Animals?
It's not a sixth sense kind of thing.
BIG QUESTIONS
How Does Blood Pressure Work?
Your doctor may tell you that your BP is “120 over 80.” You may very well not know what that means.
What's Really Inside a Hot Dog?
You've probably wondered what's really inside a hot dog before. We have the answer—though we don't recommend reading it before your next cook-out.
How Do Fireworks Actually Work?
Most of us just know to light the fuse and stand back.
How Does a Pool Table Recognize the Cue Ball?
There's a lot going on under the felt.
Why Do Americans Call It ‘Soccer’ Instead of ‘Football’?
It may rankle purists, but American English isn’t the culprit.
How Did Ancient Medics Determine the Medicinal Properties of Substances?
At the dawn of the age of scientific medicine, there were only a handful of remedies that we would recognize today as safe and effective.
Do 'Close Door' Buttons in Elevators Actually Do Anything?
Everything you know is a lie.
What Do Morticians Do With the Blood They Take Out of Dead Bodies?
The answer is more simple, and less morbid, than you probably think.
Why Did Russia Sell Alaska to the United States of America?
The decision to purchase the territory was much derided at the time.
Is There Any Point in Letting Red Wine Breathe?
At the end of a long day, the last thing you want to do is wait 30 minutes to pour a fresh glass of wine.
Is There Any Point in Letting Red Wine Breathe?
At the end of a long day, the last thing you want to do is wait 30 minutes to pour a fresh glass of wine.
Why Do We Call Some People 'Type A'?
You can thank two Californian cardiologists from the 1950s.
Which is the Largest National Park in the World?
The answer's not as straightforward as you might expect.
Why Is the American Flag Displayed Backwards on Military Uniforms?
According to the U.S. Flag Code, you shouldn’t let the flag touch the ground or hang it upside-down. While there’s no express prohibition about reversing the image, it’s probably a safe bet you shouldn’t do that, either.
What Causes Sinkholes?
Why the ground sometimes just opens up.
How Are Speed Limits Set?
Don't blame the government if you're unhappy with a speed limit—blame your fellow drivers.
Do Bacteria Have Bacteria?
Dek TK
What Is Foreign Accent Syndrome?
It starts in the brain.
Why Are Small, Fancy Hats Called Fascinators?
The name may seem like a perfect fit for the eye-catching accessory, but it used to describe a much different type of headgear.
Do Earthquakes Affect an Aircraft Flying Above?
The answer is pretty scary.