Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
A ball of glass will bounce higher than a ball made of rubber.
73
The earth is approx. 6,588,000,000,000,000,000 tons.
175
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
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Billions of neutrinos pass unnoticed through your body every second.
6
One third of the electricity produced on earth is used to power electric light bulbs!
75