Hot water weighs less than cold water for a given volume. See more

More than 50% of the people in the world have never made or received a telephone call. See more

A sneeze travels out of your mouth at over 100 mph! See more

An adult human heart weighs about 10 ounces and beats over 100,000 times a day See more

Electricity doesn't move through a wire but through a field around the wire. See more

There are 206 bones in your skeleton. See more

The screwdriver was invented before the screw. See more

You're born with 300 bones, but when you get to be an adult, you only have 206. See more

Venus is the only planet in the solar system to spin backwards. See more