Iron weighs more after it rusts.
68
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Hot water can freeze faster than cold water.
181
Sound travels fifteen times faster through steel than through air.
134
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Liquid TIDE laundry detergent glows under a blacklight.
96
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89