During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
In 1982, a high school student from Los Angeles, California unscrambled the Rubik's Cube in 22.95 seconds.
60
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
The universally popular Hershey bar was used overseas during World War II as currency.
112
Leonardo Da Vinci predicted the mass use of solar energy as long ago as 1447.
153
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
The life expectancy in 1900 was just 47 years.
49