Paul Ehrlich: Collapse of civilisation is a “near certainty” in next few decades

https://www.theguardian.com/cities/2018/mar/22/collapse-civilisation-near-certain-decades-population-bomb-paul-ehrlich

Paul Ehrlich writing on the Sixth Mass Extinction (2017): https://www.theguardian.com/commentisfree/2017/jul/11/sixth-mass-extinction-habitats-destroy-population