World Population (Use animation and before and after map)
The animation below shows the world population starting from 1960 and ending at 2015. China crossed 1 billion in 1982 and India does the same at 1999. In 2015, USA had a population between 250 and 500 million. The world population reached 7.3 billion in 2015 which is projected to increase to 9.7 billion in 2050 and further to 11.2 billion by 2100 (UN, 2015).