Your brain is 80% water.
525
Balsa wood is classified as a hard wood!
41
One barrel of petroleum holds 42 gallons.
20
For every gallon of sea water, you get more than a quarter pound of salt.
45
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
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
One ragweed plant can release as many as one billion grains of pollen!
51
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13