(December 14, 2014 at 6:37 pm)lifesagift Wrote: you look at the charts, in the last 300 years, population has gone from a billion to 7 billion.
but homonids have been around about 200,000 years... why did population levels stay so flat for so long?
It did not stay flat. It grew slowly. The reason it grew slowly was because most people died before reaching the age of reproduction. It took off when we figured out how to live longer and more healthier lives.