The circular economy represents a systemic shift from the traditional linear model of resource use. Instead of extracting raw materials, manufacturing products, consuming them, and discarding the waste, a circular framework keeps materials in continuous use. Products are repaired, redesigned, and recycled to extend their life cycles, thereby reducing demand for virgin resources and cutting carbon emissions. This approach is increasingly recognized as essential for mitigating environmental impact, conserving finite materials, and aligning industrial activity with planetary limits.
Yet, despite its promise, global circularity is in decline. The Circularity Gap Report, published in February 2023, notes that the proportion of secondary materials cycled back into the economy has fallen from 9.1% in 2018 to 7.2% in 2023. The report explains, “This isn’t simply because we’re failing to cycle more. It’s also due to increasing virgin extraction and the fact that we are putting more and more materials into stocks like roads, homes and durable goods.” Material extraction has more than tripled since 1970 and nearly doubled since 2000, reaching 100 billion tonnes annually. The report warns that continuing this trajectory risks a “total breakdown of Earth’s life support systems, which are already at a breaking point.”
Engineering disciplines are central to reversing this trend. Product design is a critical lever. Devices engineered for modularity, serviceability, and refurbishment can dramatically extend their usable life. Fairphone’s modular Android smartphone exemplifies this principle, enabling easy repairs and spare part replacement while integrating supply chain considerations into the design process. Such approaches reduce raw material demand and facilitate resource recovery.
Business models also play a role. Product-as-a-service frameworks, in which manufacturers retain ownership and customers pay for usage, encourage longevity and maintenance over disposal. Similarly, sharing economy models distribute asset use across multiple parties, maximizing utilization and minimizing idle capacity.
Data infrastructure is another enabling factor. In the Netherlands, the national bruggenbank—developed by the Department for Public Works alongside Rotterdam and Amsterdam—functions as a marketplace for decommissioned bridges and materials, optimizing reuse in construction. For sectors with high emissions and resource intensity, such as building and infrastructure, standardized metrics and transparent material availability data are vital. The World Economic Forum’s Consumers Beyond Waste initiative is working toward a unified set of reuse metrics, a step seen as essential for tackling challenges like plastic pollution.
Policy frameworks can accelerate adoption. France’s legislation to phase out single-use plastic packaging by 2040 sets clear reduction, reuse, and recycling targets. In Zurich, residents voted to embed the circular economy into the canton’s constitution, signaling public support for systemic change. The European Union’s Packaging and Packaging Waste Regulation introduces reuse targets for specific industries, creating regulatory pressure to redesign supply chains.
While recycling is often associated with circularity, it is only one component. Recycling processes consume energy and generate emissions, so they must be complemented by strategies that reduce material throughput altogether. The Circularity Gap Report identifies four guiding principles for achieving a one-third reduction in material extraction: use less, use longer, use again, and make clean.
Innovation ecosystems are proving instrumental in advancing these principles. The Circulars Accelerator, a six-month program operated by UpLink—the World Economic Forum’s innovation crowdsourcing platform—supports entrepreneurs developing scalable circular solutions. In 2022, 17 startups participated, including Aquacycl, which generates electricity from untreatable wastewater; Done Properly, which develops sustainable food ingredients in Chile; and Green Mining, which recycles consumer packaging in Brazil. Research from the Forum’s Scale360° initiative and ScaleUpNation highlights that startups targeting systemic change can exert disproportionate influence on entire industries, advancing United Nations Sustainable Development Goals more rapidly than conventional strategies.
The report’s call to action is explicit: “By upgrading to a model that maximizes the value that we extract from our precious materials, we can better ensure the well-being of present and future generations, while respecting the boundaries of our planet.” For engineers, designers, and innovators, the shrinking circular economy underscores the urgency of integrating durability, reparability, and resource efficiency into every stage of product and system development.