The average temperature at 40,000 feet above sea level is -60 F.
56
The sun is 330,330 times larger than the earth.
75
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
Cold water weighs more than hot water.
93
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
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Each day, up to 150 species of life become extinct.
-23
Nearly 50% of the world's scientists are assigned to military projects.
71