The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
A cesium atom in an atomic clock beats over nine billion times a second.
43
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Most dust particles in your house are made from dead skin!
67
The average temperature at 40,000 feet above sea level is -60 F.
56
Sound travels fifteen times faster through steel than through air.
134