Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The only letter not appearing on the Periodic Table is the letter "J".
180
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
The average temperature at 40,000 feet above sea level is -60 F.
56