In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Cold water weighs more than hot water.
93
Sound travels fifteen times faster through steel than through air.
134
The average temperature at 40,000 feet above sea level is -60 F.
56
Scientists in Germany have developed a candy that doesn't cause cavities.
11
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
