Some useful facts for all

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.