You may see our Princeton Atmospheric Chemistry Experiment mobile laboratory criss-crossing the US over the next two months as part of field projects to examine greenhouse gas and air pollutant emissions in various campaigns and emission sectors (wastewater, agriculture, ammonia supply chain). PACE will travel f to Denver, Colorado, and onward to Seattle, Washington, before circling to the Midwest in late July and eventually back to Princeton by the end of August. Find and follow us!