The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Pure water (H2O) does not conduct electricity on its own.
46
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Out of all the senses, smell is most closely linked to memory.
146
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
One ragweed plant can release as many as one billion grains of pollen!
51
In zero gravity, a candle's flame is round and blue.
16
Diamonds can be shattered with a hammer.
-104