The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The average home creates more pollution than does the average car.
33
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Cold water weighs more than hot water.
93
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65