A cubic yard of air weighs about 2 pounds at sea level.
31
Liquid TIDE laundry detergent glows under a blacklight.
96
If the chemical sodium is dropped into water it will immediately and violently explode.
67
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
A cesium atom in an atomic clock beats over nine billion times a second.
43
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18