Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Iron weighs more after it rusts.
16
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
One third of the electricity produced on earth is used to power electric light bulbs!
75
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Cold water weighs more than hot water.
93
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304