Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
In zero gravity, a candle's flame is round and blue.
16
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
No matter how cold it gets, gasoline will not freeze.
107
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57