Aims & Scope An official journal of Tsinghua University Press 'Circular Economy' refers to all the activities of reduce, reuse, and recycle in production, circulation, and consumption. As an important route to achieving a resource-saving and environmental friendly society, 'Circular Economy' is becoming increasingly important both strategically and economically. Circular Economy (CE) is an international journal serving as a sharing and communication platform for novel contributions and outcomes on innovative techniques, systematic analysis, and policy tools of global, regional, national, local, and industrial park's waste management system to improve the reduce, reuse, recycle, and disposal of waste in a sustainable way. CE aims at providing comprehensive and systematic solutions to sustainable management of waste with consideration of economy, society, and environment to achieve a model of green, low-carbon and circular development, by means of cleaner production, industrial structure optimization, policy tools and regulations adjustment, social governance by green consumption, efficient management, and preservation of renewable and natural resources, etc. The detailed scope includes but is not limited to: Reduce - prevent waste generation and pollution from the source, and reduce waste for final disposal, including products eco-design; information analysis, policy tools and techniques of green life, green purchase, green application towards reducing the consumption of energy, water and other reosuces, and minimizing of waste generaton; improvement of resource efficiency by sustainable exploitation, efficient management and preservation; green consumption based on sharing services and products. Reuse - adopt sustainable strategies to prolong the life span of products, including sustainable consumption; designs and techniques towards reuse, repair, refurbishment, cascade use, and remanufacturing. Recycle - turn waste to secondary resources, including waste collection, classification, and conversion; mechanical and physical recycling of materials; heat recovery; comprehensive utilization techniques; design of extended producer responsibility system. Disposal - develop techniques, designs, operations, and management of waste treatment and disposal engineering in response to circular economy and sustainable development, including pretreatment, disinfection, incineration and other heat treatment, landfill, solidification, stabilization, and co-disposal; contaminated site remediation; underground filling of waste; material flow analysis, risk assessment. Synergy - create comprehensive, systematic, and innovative solutions, ideas, and techniques to promote sustainable management of waste, including carbon reduction and carbon neutrality; zero-waste cities construction; technology integration and demonstration, such as inter-industrial or inter-enterprises collaborative technologies, cloud and information technologies; life-cycle management of materials; green supply chain. Circular Economy is a fully open access journal. It is co-published by Tsinghua University Press and Elsevier, and academically supported by the School of Environment, Tsinghua University, and the Circular Economy Branch, Chinese Society for Environmental Sciences. At its discretion, Tsinghua University Press will pay the Open Access Fee for all published papers from 2022 to 2025.