This paper estimates the environmental impacts of reintroducing commercial supersonic transport (SST) aircraft into the global aviation fleet. Model the landing and takeoff (LTO) noise, sonic boom, and carbon dioxide (CO2) emissions from a new, unconstrained SST network of 2,000 in 2035.

This report compares the fuel efficiency of 20 airlines operating nonstop flights between the mainland United States and East Asia and Oceania. It extends the previous transatlantic fuel efficiency methodology to the transpacific market.

Ships are an efficient way to move cargo, transporting approximately 80% of the world’s goods by volume, but ships also threaten human health, ecosystems, and the climate. This report focuses on the air and climate pollutant black carbon (BC).

Reducing greenhouse gas (GHG) emissions is the key to avoiding the most catastrophic impacts of climate change. Despite international shipping being excluded from the Paris Agreement, the International Maritime Organization (IMO) is developing its own strategy to reduce GHGs from ships.

Compiles a high-resolution ship emissions inventory in the Greater Pearl River Delta (GPRD), a heavily populated and prosperous region with heavy ship traffic. Because this traffic contributes to poor local air quality, the Chinese government has identified the GPRD region as a key target for steps to control emissions from ships.

On 8 February 2016, the International Civil Aviation Organization (ICAO) finalized a proposed performance standard for new aircraft that will mandate improvements in fuel efficiency and reductions in carbon dioxide (CO2) emissions.

Black carbon is the second largest contributor to human-induced climate warming, after carbon dioxide. International shipping is a major source of diesel black carbon emissions and not yet subject to international regulation.

Marine vessels are a large source of greenhouse gas and air pollutant emissions, including CO2, NOX, SOX, particulate matter and black carbon, which impact local air quality, human health, and the global climate.

This paper focuses on ways to reduce the emissions of the in-use vehicle fleet, with particular emphasis on heavy-duty diesel trucks, due to their disproportionate contribution to both urban air quality and greenhouse gas emissions.