We derive the optimal contributions to global climate policy when countries differ with respect to income level and pollution intensity. Countries' growth rates are determined endogenously, and abatement efficiency is improved by technical progress. We show that country heterogeneity has a...

This paper examines convergence patterns in total greenhouse gas emissions across 114 countries from 1990 to 2019. Prior research has largely focused on one representative greenhouse gas, carbon dioxide emissions, but our goal is to broaden the study. We use the club convergence test to contrast...