New technologies allow perfect detection of environmental violations at near-zero marginal cost, but take-up is low. We conducted a field experiment to evaluate enforcement of water conservation rules with smart meters in Fresno, CA. Households were randomly assigned combinations of enforcement...

This paper estimates the value of a statistical life (VSL), or the willingness to trade-off wealth and mortality risk, among 430,000 U.S. Army soldiers choosing whether to reenlist between 2002 and 2010. Using a discrete choice random utility approach and significant variation in retention...

The decade from 2010 to 2019 marked a significant turning point in China's history of environmental regulation and pollution. This article describes the recent trends in air and water quality, with a focus on the five years since China declared a "war on pollution" in 2014. It summarizes the...

We conducted a nationwide field experiment in China to evaluate the direct and indirect impacts of assigning firms to public or private citizen appeals treatments when they violate pollution standards. There are three main findings. First, public appeals to the regulator through social media...

Underrepresentation of minority and poor households in scientific studies undermines policy decisions and public health. We study data from a serological study that randomized participation incentives. Participation is low (6% at $0, 17% at $100, 29% at $500) and unequal: minority and poor...