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Diesel Exhaust
Diesel engines are a key part of the world’s transportation and industrial infrastructure, especially in heavy-duty applications. Despite the durability and efficiency of diesel engines, there have long been concerns about the environmental and human health impacts of diesel engine emissions, which include fine particulate matter (PM2.5), nitrogen oxides (NOx), and hydrocarbons (including some carcinogens). As part of its founding mission, HEI research has evaluated exposure and health effects in the ever-changing landscape of diesel engine emissions.
![Heavy-duty truck](https://www.healtheffects.org/sites/default/files/truck-desert-highway.jpg)
HEI Panel on Heavy Duty Diesel Fleet Turnover
![Marianne Hatzopoulou](https://www.healtheffects.org/sites/default/files/hatzopoulou.jpg)
Marianne Hatzopoulou,
Ph.D., Professor, Civil and Mineral Engineering, University of Toronto; Canada Research Chair in Transport Decarbonization and Air Quality
![](https://www.healtheffects.org/sites/default/files/kanok-boriboonsomsin.png)
Kanok Boriboonsomsin,
Ph.D., P.E. Research Engineer and Associate Director at CE-CERT, UC Riverside
![jane lin jane lin](https://www.healtheffects.org/sites/default/files/jane-lin.png)
Jane Lin,
Ph.D., Professor, University of Illinois Chicago
![Deb Niemeier Deb Niemeier](https://www.healtheffects.org/sites/default/files/deb-niemeier.png)
Deb Niemeier,
P.E., Ph.D., NAE Clark Distinguished Chair in Energy and Sustainability and Professor, University of Maryland
![Tara Ramani Tara Ramani](https://www.healtheffects.org/sites/default/files/tara-ramani.png)
Tara Ramani,
Ph.D., P.E. Research Engineer and Division Head - Air Quality, Energy, and Health and Deputy Director - Center for Advancing Research in Transportation Emissions, Energy and Health, Texas A&M Transportation Institute
![Christopher Tessum Christopher Tessum](https://www.healtheffects.org/sites/default/files/christopher-tessum.png)
Christopher Tessum,
Ph.D., Assistant Professor, University of Illinois at Urbana−Champaign