The first household refrigerators cost about $16,000, in today's money!
47
There is one slot machine in Las Vegas for every eight inhabitants.
58
The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
The average IQ is 100, while 140 is the beginning of genius IQ.
140
Coins usually survive in circulation for about 30 years.
66
People who drink coffee are less likely to commit suicide than people who don't.
268
Water is actually naturally blue.
48
A typical full-time worker in the US with a four-year college degree earns about $50,000. This is 62% more than a worker with only a high-school diploma.
72