The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
A cubic yard of air weighs about 2 pounds at sea level.
31
Balsa wood is classified as a hard wood!
41
German chemists made a replica of a trophy the size of one molecule.
68
The sun is 330,330 times larger than the earth.
75