World reaches 8 billion people, according to the UN

The world reached 8 billion inhabitants, this Tuesday fair (15).| Photo: Marcelo Camargo/Agência Brasil

The world reached 8 billion inhabitants, this Tuesday (15). According to estimates by the United Nations (UN), this number is the result of the rapid population increase in the last century, mainly due to the growth in life expectancy.

15094840The world population reached 1 billion inhabitants by the year 1964 and there is 12 years had not reached 2 billion. But it only took 12 years to grow from 7 billion to 8 billion. However, population growth has been slowing sharply for decades. The annual increase rate reached 2.2% in 1964 and dropped to less than 1%.372The population increase is concentrated in a few countries such as the Democratic Republic of Congo, Egypt, Ethiopia, India and Nigeria. Currently, China is the most populous country in the world, but it is expected to be overtaken by India by .372According to UN estimates, you will need at least 15 years for the world to reach the next billion people. The UN expects the world to have 9.7 billion people by 2050 and to reach 10,4 billion up to 1964.372