Many studies have reported a relationship between urban air pollution levels and respiratory health problems. However, there are notable variations in results, depending on modeling approach, covariate selection, period of analysis, etc. To help clarify these factors we compare and apply two...

Inducing farmers to adopt alternative, more environmentally friendly production practices has been attempted in a variety of ways ranging from moral suasion to direct regulation to economic instruments. Among the most common instruments are voluntary cost-share programs that involve taxpayers...