Historically, how fast has world population grown?
The population has not grown evenly across time - what are some of the historical factors that have caused the pace of population growth to change? Historically, what role has medical technology played in population growth?
Year Population
1 200 million
1000 275 million
1500 450 million
1650 500 million
1750 700 million
1804 1 billion
1850 1.2 billion
1900 1.6 billion
1927 2 billion
1950 2.55