Via NPR:

It was just over two centuries ago that the global population was 1 billion — in 1804. But better medicine and improved agriculture resulted in higher life expectancy for children, dramatically increasing the world population, especially in the West. U.N. forecasts suggest the world population could hit a peak of 10.1 billion by 2100 before beginning to decline. But exact numbers are hard to come by — just small variations in fertility rates could mean a population of 15 billion by the end of the century.

800px-ATP_conferenceThe world’s population has had a rapid increase in the last decade, but India takes the cake. With the 2011 census updated, India’s population reaches 1.21 billion. BBC reports:

India’s population has grown by 181 million people over the past decade to 1.21bn, according to the 2011 census.

More people now live in India than in the United States, Indonesia, Brazil, Pakistan and Bangladesh combined.

India is on course to overtake China as the world’s most populous nation by 2030, but its growth rate is falling, figures show. China has 1.3bn people.

The census also reveals a continuing preference for boys – India’s sex ratio is at its worst since independence.

Female foeticide remains common in India, although sex-selective abortion based on ultraso