The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Out of all the senses, smell is most closely linked to memory.
146
Diamonds can be shattered with a hammer.
-104
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Iron weighs more after it rusts.
16
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15