One of the major drivers of global warming is the greenhouse gases we emit by burning fossil fuels. Another major driver of global warming and one of the ways in which we are making our earth unsustainable for human life is the population explosion. When I was young the earth’s population was around 3 billion. It has more than doubled. When we talk about the growth of population, the crucial issue is about the time it would take to double. Population can double in as little as a generation. We are on the way to an earth with 12 billion people and counting. The devastation that is causing and will cause is incalculable and will make the earth inhospitable in short order, contributing to the overuse of water, the over fishing of the oceans, the deforestation of the jungles, the overuse of carbon based fuels even while we try to flush them out of the atmosphere and every other form of damage to the earth we depend on.