Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Nearly 50% of the world's scientists are assigned to military projects.
71
One ragweed plant can release as many as one billion grains of pollen!
51
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
One cubic foot of gold weighs more than 1,200 pounds!
78
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
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