http://www.physorg.com/news70809806.html
I am reading Jared Diamond"s "Collapse: Why Societies Choose to Fail or Succeed".
I am reading about the collapse of the Anasazi culture which occurred around 1200 to 1300 at assorted southwest USA locations including Arizona where I live. I haven"t finished that section yet, but a very severe, sustained drought period played a major role.
I find myself wondering if sufficient arable land might wind up devoted to the production of crops which can be made into methanol and diesel fuel to reduce the need for fossil fuels and push a non-trivial portion of the Earth"s population into starvation.
Sounds like the makings of a science fiction novel, not that I feel capable of worting such a novel.