Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
One ragweed plant can release as many as one billion grains of pollen!
51
No matter how cold it gets, gasoline will not freeze.
107
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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