A cubic yard of air weighs about 2 pounds at sea level.
31
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Cold water weighs more than hot water.
93
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
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
In zero gravity, a candle's flame is round and blue.
16