This article proposes and evaluates four hypotheses about US pollution and environmental policy over the last half … century. First, air and water pollution have declined substantially, although greenhouse gas emissions have not. Second …, environmental policy explains a large share of these trends. Third, much of the regulation of air and drinking water pollution has …

This article proposes and evaluates four hypotheses about US pollution and environmental policy over the last half … century. First, air and water pollution have declined substantially, although greenhouse gas emissions have not. Second …, environmental policy explains a large share of these trends. Third, much of the regulation of air and drinking water pollution has …

Quantitative assessments of health impacts from environmental pollution are useful informationfor government and the … effects of ambient air pollution (AAP) in Greater Cairo, and inadequate household drinking water, sanitation, and hygiene … as a result of ambient PM2.5 air pollution in Greater Cairo, and inadequate water, sanitation, and hygiene in all of …

Although the U.S. spends billions of dollars a year controlling water pollution, there is little empirical evidence of … comparable benefits. This study argues that measurement error in pollution data causes benefits to be underestimated. Using … nutrient pollution. Instrumental variable estimates of the effects of phosphorus on recreational use are an order of magnitude …

, Kallikkadu, Mandapathinkadavu, Aruvippuram, Neyyattinkara and Poovarwer were selected depending upon the various pollution … sources. In this study, minimum pollution was reported at the Neyyar dam, which is located near the river origin and maximum … pollution at the Poovar, which is located near Pozhikkara …