A cubic yard of air weighs about 2 pounds at sea level.
31
Your brain is 80% water.
525
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
The smell of freshly cut grass is actually a plant distress call.
31
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42