Why has the rate of human population growth increased?
Human population grew exponentially, touching a maximum percentage of 2.2 per annum in 1962-1963. Annual global population growth rate is now 1.1%.
Rate of human population growth increased mainly due to advancement of medical science and promptly after the discovery of antibiotics. By the middle of twentieth century death rate suddenly plunged including child mortality rate but birth rate remained very high as before.
Advancement in science and technology also meant availability of more food on the plate, better sanitary condition, improved maternity service. All this contributed in population growth.
In developing countries, lack of education and poverty are hurdles in achieving a desirable and lower rate of growth.