In 2012, the US Environmental Protection Agency finally started to regulate maritime emissions of particulate matter. Michelle Marcus (Vanderbilt University) joins to describe how the US policy improved air quality and public health but fell short of expectations. She also explains how the shipping industry’s response to the regulation offers lessons for the rest of the world in the face of new global standards that went into effect in 2020 (Total: 24:36).

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Hansen-Lewis, Jamie and Michelle M. Marcus. 2022. Uncharted Waters: Effects of Maritime Emission Regulation. NBER Working Paper No. 30181, October.