Carbon Footprints (CF) is an international gold open-access journal advancing quantitative and qualitative understanding of greenhouse-gas and air-pollutant emissions, low-carbon energy transitions, and interactions among carbon, energy, pollutants, and socio-environmental systems. The journal covers four core sectors: Ecosystem Footprints, including AFOLU, blue carbon and water resources; Urban Systems, including mobility, buildings, waste and food systems; Industrial Systems, including life-cycle assessment, CCUS and circular economy; and Environmental & Resource Economics, including carbon pricing, mitigation policies and energy, transport, health and agricultural economics.