Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
The only letter not appearing on the Periodic Table is the letter "J".
180
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61