Carbon Footprints (CF) is an international, gold open-access journal committed to advancing quantitative and qualitative understanding of: Greenhouse-gas and air-pollutant emissions (CO2, CH4, N2O, particulate matter, etc.); Low-carbon energy transitions and related technologies; Interactions between carbon, energy use, air pollutants, and socio-environmental systems. The journal illuminates the patterns, drivers, and mitigation pathways of carbon and pollutant footprints across natural, urban, industrial, and economic systems.