The earth is approx. 6,588,000,000,000,000,000 tons.
175
The sun is 330,330 times larger than the earth.
75
Hot water can freeze faster than cold water.
181
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Iron weighs more after it rusts.
16
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
