The human’s largest organ is the skin. It is 16 percent of our total body weight, meaning that the average person carries around roughly 35 pounds of skin.

The most common human blood type, shared by 46 percent of the world, is type O.

King Mongkul of Siam, known from the movie “The King and I” had 9,000 wives.

Roughly 10 percent of all men and eight percent of all women are left-handed.

The bone material in our body can stand twice the pressure of granite and has four times the tensile strength of concrete. Compared to their weight, our bones are five times stronger than steel.

A year is not 365 days. It is actually 365 days, five hours, 48 minutes and 46 seconds. The extra hours, minutes and seconds equal one day every four years – the leap year.

A mosquito does not need blood to survive. It feeds off nectar. Actually, only the female drinks blood, as she needs the extra protein when laying eggs.

Egyptians invented the wedding ring. Since a ring doesn’t have a beginning or an end, it was viewed as a symbol for the unbreakable bond of marriage.

The world’s largest twin battleships were the Japanese Yamato and Musashi. Each had an overall length of 863 feet.

Sources: Illustrerad Vetenskap, Guinness Book of Records