Brass doorknobs automatically disinfect themselves in about 8 hours.
18
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
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
A cesium atom in an atomic clock beats over nine billion times a second.
43
The earth is approx. 6,588,000,000,000,000,000 tons.
175
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65