title: Future collapse: how optimistic should we be?
authors.affiliation: Department of Biology, Stanford University, Stanford, CA, USA. pre@stanford.edu
authors.forename: Paul R
authors.initials: PR
authors.lastname: Ehrlich
authors.forename: Anne H
authors.initials: AH
authors.lastname: Ehrlich
mesh_terms: D002962:Civilization; D004190:Disasters / Q000517:prevention & control*; D017753:Ecosystem; D006801:Humans; D011156:Population Density
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