There was once an undersea post office in the Bahamas.
241
When glass breaks, the cracks move faster than 3,000 miles per hour. To photograph the event, a camera must shoot at a millionth of a second!
114
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
The first household refrigerators cost about $16,000, in today's money!
47
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
By raising your legs slowly and laying on your back, you can't sink in quicksand.
105
The French named one of their aircraft carriers after Ferdinand Foch, a man who once said "Airplanes are interesting toys but of no military value".
10
