According to studies, men change their minds two to three times more often than women.
72
Sound travels fifteen times faster through steel than through air.
134
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Pumice is the only rock that floats on water.
14
One 75-watt bulb gives more light than three 25-watt bulbs.
57
For every gallon of sea water, you get more than a quarter pound of salt.
45
The average temperature at 40,000 feet above sea level is -60 F.
56
Hot water can freeze faster than cold water.
181