Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
The average temperature at 40,000 feet above sea level is -60 F.
56
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Scientists in Germany have developed a candy that doesn't cause cavities.
11
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5