The population of the earth will be eight billion on Tuesday. That's 11 years after the population reached seven billion.

The United Nations announced that the world's population will reach eight billion on Tuesday. That's 11 years after the population reached seven billion.

The increase in the population of the Earth raises some big questions about how much and how fast the population will increase.

The United Nations also predicts that it will take another 15 years for the world's population to grow from eight billion to nine billion by It may take until 2080 to reach 10 billion.

The fastest population growth rate in the world dates back to the 1960s, when it was 2%. That rate has since fallen to 1% per year until 2022.

According to statistics, the world's population exceeded one billion in 1803, two billion in 1927 and four billion in 1974.