The population of the Earth has more than doubled since 1950.
151
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
The earth travels through space at 660,000 miles per hour.
189
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
Today's top fuel dragsters take off with more force than the space shuttle.
120