Today we talked about population. The population of the world has gotten far bigger than it had been 12,000 years ago. It took us about 10,000 years to get to 1 billion people. It took us about 123 more years to get to 2 billion then it was 33 years. Then by 7 billion it took us only 12 years. There are currently 7.5 billion people on the planet right now. That number grows by 200,000 a day