The earth is approx. 6,588,000,000,000,000,000 tons.
175
4.5 pounds of sunlight strike the Earth each day.
27
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
If the chemical sodium is dropped into water it will immediately and violently explode.
67
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
The storage capacity of human brain exceeds 4 Terrabytes.
140
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
One ragweed plant can release as many as one billion grains of pollen!
51