Template-type: ReDIF-Paper 1.0 Author-Name: Azomahou, Theophile Author-Email: azomahou@merit.unu.edu Author-Workplace-Name: UNU-MERIT Author-Name: Goedhuys, Micheline Author-Email: goedhuys@merit.unu.edu Author-Workplace-Name: UNU-MERIT Author-Name: Nguyen-Van, Phu Author-Email: nguyen-van@unistra.fr Author-Workplace-Name: BETA-CNRS, Universite de Strasbourg Title: A structural nonparametric reappraisal of the CO2 emissions-income relationship Abstract: Relying on a structural nonparametric estimation, we show that CO2 emissions clearly increase with income at low income levels. For higher income levels, we observe a decreasing relationship, though not significant. We also find that CO2 emissions monotonically increases with energy use at a decreasing rate. Classification-JEL: C14, O13 Keywords: Nonparametric triangular systems, EKC, Energy use, CO2 emissions Series: UNU-MERIT Working Papers Creation-Date: 2009 Number: 2009-064 File-URL: https://unu-merit.nl/publications/wppdf/2009/wp2009-064.pdf File-Format: application/pdf File-Size: 275 Kb Handle: RePEc:unm:unumer:2009064