By immediately putting a check to the rising population, by making stringent laws against the ongoing population explosion.
Technically, the world's population can still expand hugely as there's enough land to provide crops for everyone. However, this needs switching from meat eating to a vegetarian diet (which is far healthier, obviously), and freeing up the millions of acres devoted to grazing beef. The worst culprit on the carbon footprint scale is meat eating, above transportation and industry - see this article in the Scientific American http://www.scientificamerican.com/artic … -hamburger
So that is the way to survive the next hundred years. I have various hubs on the effects of meat eating on our health, and the world in general. The world really needs to be re-educated - in time...
Err, of course they can. It'd take something catastrophic to wipe out 8 billion people in 100 years....and even then the odds that there would be zero survivors? Not likely.
The same way we have survived for thousands of years. Survival is one of the strongest instincts and mankind will always find ways to adapt to changing circumstances by intellect and ingenuity. The world is not overpopulated. We could just do a better job of managing current resources and making provision for future needs.
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.... will manking be reduced to "Eloi and Morlocks?"
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