http://www.forbes.com/sites/richarddaveni/2013/09/27/crackonomics-2/

Good summary of the issue and steps toward a solution.

Good companion reading article that got buried in climate thread:

http://www.pbs.org/newshour/businessdesk/2013/09/a-supply-side-nightmare-scenar.html

For who could be free when every other man's humour might domineer over him? - John Locke (2nd Treatise, sect 57)