This paper evaluates how firms change their prices in response to cost shocks and other price changes in their environment. We first document three new facts on the heterogeneity of firm-level producer prices and their relationship to buyers and suppliers in a production network. We then develop...

We investigate the effects of input variety creation and destruction on both micro- and macroeconomic outcomes using detailed data from Belgium. Our microeconomic analysis establishes that the elasticity of downstream firms' marginal cost to supplier separation captures the area under the input...

Poverty and mortality are arguably the two major sources of loss of well-being. Most mainstream measures of human development capturing these two dimensions aggregate them in an ad-hoc and controversial way. This paper develops a new index aggregating the poverty and the mortality observed in a...