Exploiting heterogeneity in U.S. firms' exposure to an unconventional monetary policy shock that reduced debt financing costs, I identify the impact of financing conditions on firms' toxic emissions. I find robust evidence that lower financing costs reduce toxic emissions and boost investments...

We study Ramsey monetary policy in a New Keynesian model embodying pollutant emissions and greenhouse gas emissions control policy. We find that the optimal response of inflation to technology shocks is crucially affected by the environmental regime adopted for emissions control