To "testify" was based on men in the Roman court swearing to a statement made by swearing on their testicles. See more

Former enemies, America and Russia now have a great deal in common - they both lead the world in locking people up. See more

On average, Americans spend about 6 months of their lives waiting in front of traffic lights. See more

The ant can lift 50 times its own weight. See more

Icthyomaniacs are people who are crazy about fish. See more

Albert Einstein's parents were worried he was mentally slow, because it took him a long time to learn how to speak. See more

Women blink nearly twice as much as men. See more

If a surgeon in Ancient Egypt lost a patient while performing an operation, his hands were cut off. See more

A day on the planet Mercury is twice as long as its year. See more

A chicken who just lost its head can run the length of a football field before dropping dead. See more

Americans ate eight million more orders of french fries and almost six million more hamburgers this year compared to last. See more

All the chemicals in the human body have a combined value of approximately £4.00. See more

Humans, bonobo monkeys, and dolphins are the only species that have sex for pleasure. See more

When baby sharks are born, they swim away from their mothers right away and are on there own. In fact, their mothers might see them as prey. See more

The right lung is slightly larger than the left. See more

Two-thirds of the world's executions occur in China. See more