We present, extend and estimate a model of international trade with firm heterogeneity in the tradition of Melitz (2003) and Melitz and Ottaviano (2005). The model is constructed to yield testable implications for the dynamics of international prices, productivity levels and markups as functions...

Plastics today feature in every part of our lives and are found everywhere. The global realisation that plastics are an environmental problem has focused on plastic waste and pollution, but plastics are also problematic in terms of the global climate emergency, because almost all plastics today...