We estimate the causal effects of acute fine particulate matter exposure on mortality, health care use, and medical costs among the US elderly using Medicare data and a novel instrument for air pollution: changes in local wind direction. We develop a new approach that uses machine learning to...

Policies aimed at reducing the harmful effects of air pollution exposure typically focus on areas with high levels of pollution. However, if a population's vulnerability to air pollution is imperfectly correlated with current pollution levels, then this approach to air quality regulation may not...

Policies aimed at reducing the harmful effects of air pollution exposure typically focus on areas with high levels of pollution. However, if a population's vulnerability to air pollution is imperfectly correlated with current pollution levels, then this approach to air quality regulation may not...

We estimate the causal effects of acute fine particulate matter (PM 2.5) exposure on mortality and health care use among the US elderly using Medicare administrative data and a novel instrument for air pollution: changes in the local wind direction. We then develop a new methodology that uses...

We estimate how acute air pollution exposure from wildfire smoke impacts human health in the U.S., allowing for nonlinear effects. Wildfire smoke is pervasive and produces air quality shocks of varying intensity, depending on wind patterns and plume thickness. Using administrative Medicare...