Here are some useful and interesting facts.
- The largest animal that ever lived on this earth is still living - the Blue Whale.
- If earth were reduced to the size of a basket ball, the moon would be the size of tennis ball and they would be 25 feet apart.
- The world consumes 2 liters of oil per day per person.
- Of all the people who lived in history and who reached age of 65 years till now, half of them are living right now.
- If the earth life was compressed to one year, then humans would have been around for only 2 seconds.
- The population of middle east tripled over the last 30 years.
- 70% of an adult body is made up of water.
- The first known transfusion of blood was performed in the year 1667, when Jean-Baptiste, transfused two pints of blood from a sheep to a young man.
- 7% of human body is made up of blood.
