Yawns are more contagious among people with closer relationships.
163
The P.S. at the end of a letter stands for Post Script.
40
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Moths are unable to fly during an earthquake.
328
A Native American tribe in South Dakota collects bottle caps left by campers, using them as currency. Several banks in the area now recognize the caps as legal tender.
225
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Domestic pigs average a top speed of about 11 miles per hour.
182