[Number one bummer]

I doubt there will be a drop in world population in any of our lifetimes. There was a book in the 1970's called 'The Population Bomb' where the author, Paul Ehrlich, hypothesized that mass starvation would kill hundreds of millions before the new millennia. He thought their wasn't enough food to feed the number of people on the earth at the time. Similar to global warming this was a doomsday scenario. However, just like the oil alarmists of the 19th and 20th centuries, he was wrong. Farm tech, yield tech and water technology advancements easily fed the growing populations. You could argue the people that are starving now are their due to corrupt governments and poor culture as opposed to overpopulation. Alarmists are wrong 99% of the time, as long as we have semi-free markets there will be solutions.