Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The smell of freshly cut grass is actually a plant distress call.
31
Balsa wood is classified as a hard wood!
41
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
A ball of glass will bounce higher than a ball made of rubber.
73
Iron weighs more after it rusts.
68
Pumice is the only rock that floats on water.
14