The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Out of all the senses, smell is most closely linked to memory.
146
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Balsa wood is classified as a hard wood!
41