Schools provide a unique opportunity to influence healthy eating decisions in children. Field experiments provide a practical tool for evaluating the types of interventions that can have the largest impact on these decisions in the short and long run. This article provides some insights on conducting field experiments in schools; the issues it covers are related to data collection, randomization, heterogeneous treatment effects, and statistical inference.

In this paper, I have explored the link between grazing and water resource scarcity and per capita food consumption expenditure as a proxy for welfare and food security using distance and shadow price as a resource scarcity indicator in Northern Ethiopia based on a unique data set for 518 sample farmers. To address my objectives, I employed an IV 2SLS model for estimating welfare and probit for analyzing food security, drawing on a separable farm household model. My results confirmed the theoretical prediction that grazing and water affect households’ welfare and food security adversely, as predicted by the downward spiral hypothesis.

Reducing agricultural nonpoint pollution has been an environmental policy issue since the early 1980s. We discuss the evolution and results of federal and state policy, the contributions of applied economic research to improving the effectiveness and efficiency of water pollution control policies for agriculture, elements of policy reforms that are consistent with the Clean Water Act, and the outlook for needed policy innovation.