The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
4.5 pounds of sunlight strike the Earth each day.
27
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
A cubic yard of air weighs about 2 pounds at sea level.
31
Nearly 50% of the world's scientists are assigned to military projects.
71
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
A single speck of dust is half way in size between a subatomic particle and the Earth.
15