The average temperature at 40,000 feet above sea level is -60 F.
56
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
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
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Billions of neutrinos pass unnoticed through your body every second.
6
No matter how cold it gets, gasoline will not freeze.
107
Brass doorknobs automatically disinfect themselves in about 8 hours.
18