I'm really more concerned with the population growth, which is a direct causation. If population growth remains steady at today's level then in ~700 years they'll only be enough land density left for an individual to occupy 1 metre squared to his or herself.
Obviously it can't get to that stage and 0% population growth has to occur sometime fairly short-term. Which is really quite scary, as I think we have a better chance of agreeing to a war than to organise a world-wide regulation on controlling the population epidemic, if it means countries have to voluntarily reduce their GDP. Ironically, one of the ways we can counter population growth is by reducing the average life expectancy by increasing carbon emissions and pollution...or maybe the increase in natural disasters is nature's way?
