Obsessive nose picking is called Rhinotillexomania.
101
A person can live without food for about a month, but only about a week without water.
156
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14