Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Cold water weighs more than hot water.
93
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Out of all the senses, smell is most closely linked to memory.
146
Sound travels fifteen times faster through steel than through air.
134