"There is No Steady State Economy (except at a very basic level)" http://ourfiniteworld.com/2011/02/21/there-is-no-steady-stat...
Limits to Growth–At our doorstep, but not recognized http://www.resilience.org/stories/2014-02-12/limits-to-growt...
Wealth And Energy Consumption Are Inseparable http://www.declineoftheempire.com/2012/01/wealth-and-energy-...
Galactic-Scale Energy http://physics.ucsd.edu/do-the-math/2011/07/galactic-scale-e...