A recent study by Feng et al. [Feng S, Krueger A, Oppenheimer M (2010) Proc Natl Acad Sci USA 107:14257–14262] in PNAS reported statistical evidence of a weather-driven causal effect of crop yields on human migration from Mexico to the United States. We show that this conclusion is based on a different statistical model than the one stated in the paper. When we correct for this mistake, there is no evidence of a causal link.
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Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/unobserved-time-effects-confound-identification-climate-change-impacts
[2] http://admin.indiaenvironmentportal.org.in/category/author/maximilian-auffhammer
[3] http://admin.indiaenvironmentportal.org.in/category/author/jeffrey-r-vincent
[4] http://admin.indiaenvironmentportal.org.in/category/journal/proceedings-national-academy-sciences
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-impacts
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/migration
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mexico
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
