Sound travels fifteen times faster through steel than through air.
134
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
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
A cesium atom in an atomic clock beats over nine billion times a second.
43