Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The only letter not appearing on the Periodic Table is the letter "J".
180
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
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
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
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