Scientists aren't sure what color dinosaurs were.
312
In zero gravity, a candle's flame is round and blue.
16
Sound travels about 4 times faster in water than in air.
408
Iron weighs more after it rusts.
16
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A cesium atom in an atomic clock beats over nine billion times a second.
43
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
Neanderthal man had a brain capacity 100cc larger than modern man's.
50