Leonardo Da Vinci predicted the mass use of solar energy as long ago as 1447.
153
The exact cause of death and burial site of Genghis Khan is unknown, because all of the 2000 funeral guests and 800 soldiers were killed in order to preserve the secret.
16
A monk had once written over a book that contained information about calculus that was written by Archimedes in ancient Greece that could have made us 100 or even 1000 years more mathematically and technologically advanced.
13
In 1982, a high school student from Los Angeles, California unscrambled the Rubik's Cube in 22.95 seconds.
60
The Statue of Liberty was a gift of friendship resulting from the diplomatic relationship between the United States and France.
97
