The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Pumice is the only rock that floats on water.
14
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
In zero gravity, a candle's flame is round and blue.
16
German chemists made a replica of a trophy the size of one molecule.
68
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Scientists are now able to grow 'beating' heart tissue in a lab!
162