When someone annoys you, it takes 42 muscles in your face to frown. See more

The world's youngest parents were 8 and 9 and lived in China in 1910. See more

Don't give a dog chocolate! Chocolate affects a dog's heart and nervous system; a few ounces are enough to kill a small dog. See more

As much as 80% of microwaves from mobile phones are absorbed by your head! See more

Your system of blood vessels is over 60,000 miles long. That's long enough to go around the world more than twice! See more

Blood is about 78 percent water. See more

In ancient Egypt, killing a cat was a crime punishable by death. See more

The light from your computer screen streams at you at almost 186,000 miles a second. See more

Half of all Americans live within 50 miles of their birthplace. See more