title: The specter of Malthus returns.
authors.affiliation: Earth Institute, Columbia University, USA.
authors.forename: Jeffrey D
authors.initials: JD
authors.lastname: Sachs
mesh_terms: D003247:Conservation of Natural Resources; D005523:Food Supply / Q000706:statistics & numerical data*; D006801:Humans; D011157:Population Dynamics; D011158:Population Growth