At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Pure water (H2O) does not conduct electricity on its own.
46
Nylon is made from coal and petroleum.
42
Nearly 50% of the world's scientists are assigned to military projects.
71
A cubic yard of air weighs about 2 pounds at sea level.
31
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
