Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
In zero gravity, a candle's flame is round and blue.
16
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Cold water weighs more than hot water.
93
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
A ball of glass will bounce higher than a ball made of rubber.
73