One 75-watt bulb gives more light than three 25-watt bulbs.
57
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
4.5 pounds of sunlight strike the Earth each day.
27
Each day, up to 150 species of life become extinct.
-23
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The storage capacity of human brain exceeds 4 Terrabytes.
140
Nylon is made from coal and petroleum.
42