Commentary: Our 'hot, flat, crowded' -- and dying -- planet is the next 'big short'ARROYO GRANDE, Calif. (MarketWatch) -- Imagine a secret society, code name "Avatar 2154," based on the date of the "War of 2154" between the "Sec-Ops" armies from "Eaarth," funded by the "Resources Development Corporation," against the "Na'vi" indigenous tribes on the Pandora moon. The war is over mining rights to Pandora's unobtanium, a powerful new energy source needed back on Eaarth to save our planet, where rapid population growth is exhausting limited natural resources, resulting in a dying civilization. Obviously this is a metaphor for today's...