TIL that the world's population went from 1.5 billion to 6.1 billion in only one century.

http://ourworldindata.org/data/population-growth-vital-statistics/world-population-growth/



Submitted April 19, 2015 at 03:06AM by LetsPlayKvetch http://www.reddit.com/r/todayilearned/comments/332er8/til_that_the_worlds_population_went_from_15/