Brilliant presentation by way of Steve Levin at SlideShare.
Water shortages at a massive scale may arrive before the energy crisis hits home... yet who could have predicted we will be buying water 20 years ago, where today it is approx. $13B industry in the USA.
I believe we will be buying air in the metropolis of the world by mid-century on retail... wonder if air can become a CPG / FMCG product just like water? I am confident it will.