Planetary Boundaries: Safe Operating Space

More information:

+http://www.nature.com/nature/journal/v461/n7263/fig_tab/461472a_F1.html

+http://planetsave.com/2010/04/12/nine-%E2%80%98planetary-boundaries%E2%80%99-cited-as-crucial-for-human-survival/

+http://postgrowth.org/safe-operating-limits/

+http://www.stockholmresilience.org/research/researchnews/planetaryboundariespresentedattedglobal2010.5.40d64f1b129b2c781e0800098.html