Less than 2 percent of the worldwide population has naturally green eyes. Green is one of the rarest eye colors. The green color of the eyes is formed when there is a low amount of melanin in the iris and a varying amoun... More »

As of February 2015, popular estimate is that between five and eight percent of the population has hazel eyes. This makes hazel eyes the third most common eye color after brown and blue. More »

The percentage of the world's population who have multiple-colored eyes is not documented. Most babies are born with blue eyes that vary in color but develop into a permanent shade by the age of 5. More »

The percentage of the world's population who have multiple-colored eyes is not documented. Most babies are born with blue eyes that vary in color but develop into a permanent shade by the age of 5. More »

There are 983 million people in the world who speak English, or 13% of the world's population, according to Ethnologue. It is estimated 372 million speak English as their first language, while 611 million speak English a... More »

Approximately 10 percent of the world's population is left-handed. Notably, although most people use their right hands for performing tasks such as writing, approximately 30 percent of the population is mixed handed, whi... More »

As of 2013, an estimated 13.2 percent of the population in the United States is African-American. This percentage reflects those who identified themselves as a single race and does not include those who identify as havin... More »

www.reference.com World View Social Sciences Population & Demography