At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
One barrel of petroleum holds 42 gallons.
20
The smell of freshly cut grass is actually a plant distress call.
31
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Nearly 50% of the world's scientists are assigned to military projects.
71
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39