Pumice is the only rock that floats on water.
14
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
The smell of freshly cut grass is actually a plant distress call.
31
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
A cubic yard of air weighs about 2 pounds at sea level.
31
Balsa wood is classified as a hard wood!
41
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