Abstract

In this paper, we study the relationship between Economic Policy Uncertainty (EPU) and carbon dioxide (CO 2 ) emissions. Using an extensive dataset from 23 countries consisting of 6800 firm-year observations, we provide strong evidence that EPU increases firms’ CO 2 emissions. Our main inference is robust when using alternative measures of CO 2 emissions and EPU, alternative econometric specifications and samples, and several approaches to control for possible endogeneity. In a set of additional analyses, we first show that a board’s characteristics (i.e., board gender diversity and board independence) significantly moderate the studied relationship. Second, cross-country characteristics (i.e., government effectiveness, control of corruption, and democracy) seem important in the relationship between EPU and CO 2 emissions. Our findings significantly contribute to the debate on firms’ ethical responsibility in managing climate change and CO 2 emissions.