regulation, rather than changes in productivity and trade, account for most of the emissions reductions …

A comparative study of the contribution of R&D to firm-level productivity in French and United States manufacturing … control for both sources of estimation bias, and we find 1) overall, the contribution of R&D to sales productivity growth …

Agricultural productivity in Sub-Saharan Africa (SSA) lags far behind all other regions of the world. A long list of … program aims to relax multiple constraints to productivity simultaneously. We show that participation causes statistically and …

exogenous productivity shocks arising from variation in temperature are propagated into the future. We find that past weather … shocks have persistent effects on land values and productivity up to two years following the shock. Propagation and … amplification of productivity shocks are both significantly larger during the farm debt crisis of the 1980s and amongst farms in …

increased fertilizer use has driven much of the productivity growth rather than the adoption of improvements in seeds and … fertilizer amounts and the marginal returns to fertilizer use. The results demonstrate the key changes behind this silent maize … revolution and point to the importance of taking into account farmer heterogeneity in estimating productivity and returns to …

While many developing-country policymakers see heavy fertilizer subsidies as critical to raising agricultural … productivity, most economists see them as distortionary, regressive, environmentally unsound, and argue that they result in … politicized, inefficient distribution of fertilizer supply. We model farmers as facing small fixed costs of purchasing fertilizer …

might lament any departure from broad carbon pricing, citing efficiency costs. This paper offers theory and numerical …