The world's population is expected to hit seven billion in the next few weeks. After growing very slowly for most of human history, the number of people on Earth has more than doubled in the last 50 years. Where do you fit into this story of human life? Fill in your date of birth below to find out.
In developing nations, where improvements in health care and sanitation are seeing death rates fall, birth rates still remain relatively high. This is leading to rapidly rising populations. In fact, 97 out of every 100 new people on the planet are currently born in developing countries. Qatar - which has a large immigrant workforce - has seen its population rise rapidly in recent years.
In richer economies, although death rates are also low, widely-available birth control and a desire for smaller families keep birth rates subdued. Fewer babies ensures populations level off or even decline. Moldova, although poor by European standards, has seen its population drop mainly because of emigration.
Japan's high life expectancy has been put down to a combination of a healthy diet and good public health provision, which includes regular check-ups.
The low life expectancy of those born in poorer countries, such as the Central African Republic, is explained by a number of factors, including poverty, conflict, poor access to health care and the high prevalence of Aids.
the amount the population has grown while you've been on this site