When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
Pumice is the only rock that floats on water.
14
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Iron weighs more after it rusts.
68