The world's population will reach eight billion today i.e. on November 15. The United Nations report claims that by 2030 there could be 850 crore people on Earth, 9700 million by 2050 and 10400 million by 2100. It was also told that the average age of human has also been 72.8 years today, it has increased by nine years from 1990 till 2019. By 2050 a human will live an average of 77.2 years. On average, women live 5.4 years longer than men. Their average age is estimated to be 73.4 years for males and 68.4 years for males.

According to the United Nations report, it is a milestone in human development. Improvements in public health, nutrition, sanitation and medicine are believed to be the main reasons behind this phenomenal growth.

According to the report, it has taken 12 years for the global population to grow from seven to eight billion, while it will reach 9 billion by 2037. 

According to the report, the overall growth rate of the global population is slowing down. 

The slowest growth rates since the 1950s have resulted in declining fertility in many countries. The population is growing at the slowest rate since the 1950s. In the year 2020, it has decreased to less than one percent. 

India will become the most populous country by 2023 leaving behind China. The world population is estimated to reach 1040 crore around 2080.

By 2050 India, Pakistan, Congo, Egypt, Ethiopia, Nigeria, the Philippines and Tanzania will have 50 percent of the world's population. 

According to the report of the Institute of Health Metrics Evaluation, after 78 years, the TFR in India will be at 1.29, which is much lower than the UN estimate of 1.69. India's population may decrease by 433 million in the year 2100 from the estimated estimate.

During 2010 to 2021, 16.5 crore Pakistanis left their country and migrated to other countries. After this 35 lakh people migrated from India, 29 lakh from Bangladesh, 16 lakh from Nepal and 10 lakh from Sri Lanka.