The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
Pumice is the only rock that floats on water.
14
The human sigh acts as a physiological reset button.
23
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
A man earned 4 million airline miles for free without breaking any laws by using his credit card to purchase free-delivery $1 coins from the U.S. mint.
11