Vol. 2, No. 2. Spring 2018 Download Vol. 2 No. 2. Full Issue PDF Editorial introduction Anthropocentrism – the origin of environmental degradation? David Samways Article A Seneca Collapse for the world’s human population? Ugo Bardi Article Postmaterial experience economics, population, and environmental sustainability Douglas E. Booth Praxis The hidden gem of the Cairo Consensus: helping to end population growth with entertainment media William N. Ryerson Book review Anthrozoology: embracing co-existence in the Anthropocene Michael Charles Tobias and Jane Gray Morrison. Cham: Springer, 2017. ISBN 978-3-319-45963-9 £24.00 (GBP). 338pp. Paul R. Ehrlich Article A brief history of “IPAT” (impact = population x affluence x technology) John P. Holdren