Twice over the past few years, when talking about issues relating to human justice, world hunger, illiteracy, etc., and how the church needs to be involved in the solutions to these crises, my pastor had a chart that shows population growth, past and future. Both times he has done this, it has boggled my mind and helped me understand some of the problems we face a little better than before.
Whether you believe in evolution or creationism, whether you believe in new earth or old earth, it still took a long, long time — numerous millennium — for the world's population to reach 1 billion (1804). It only took another 123 years to double to 2 billion (1927). It doubled again to 4 billion in only 47 years (1974). It made it to 6 billion in another 25 years (1999). Estimates for the future: Total world population will hit 7 billion in 2011 (that's only three years, folks); 8 billion in 2024; and 9 billion by 2042.
Approximately eight thousand years (minimum) to reach 1 billion people in the world, and just over two hundred years to grow to 7 billion. And US and Canada only represents about 5% of that population.
Makes you think, doesn't it?