Modeling sustainability: population, inequality, consumption, and bidirectional coupling of the Earth and Human Systems. 
'Consumption, inequality, and population have increased extremely fast, especially since about 1950, threatening to overwhelm the many critical functions and ecosystems of the Earth System. Changes in the Earth System, in turn, have important feedback effects on the Human System, with costly and potentially serious consequences.'
(National Science Review) >

https://academic.oup.com/nsr/article/3/4/470/2669331