Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The sun is 330,330 times larger than the earth.
75
Nylon is made from coal and petroleum.
42
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The average home creates more pollution than does the average car.
33
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Sound travels fifteen times faster through steel than through air.
134