The smell of freshly cut grass is actually a plant distress call.
31
In zero gravity, a candle's flame is round and blue.
16
Pumice is the only rock that floats on water.
14
Sound at the right vibration can bore holes through a solid object.
134
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
A cesium atom in an atomic clock beats over nine billion times a second.
43