Most dust particles in your house come from dead skin.
48
The force of a suction cup is calculated using F=AP.
15
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
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
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
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9