One cubic foot of gold weighs more than 1,200 pounds!
78
If the chemical sodium is dropped into water it will immediately and violently explode.
67
The force of a suction cup is calculated using F=AP.
15
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
A cesium atom in an atomic clock beats over nine billion times a second.
43
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
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
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44