Urban impact of rare earth elements | Science
The burgeoning high-tech sectors, particularly in new energy generation and electronic information, have significantly intensified the global demand for rare earth elements (REEs). These critical raw materials are essential for a wide array of applications, ranging from renewable energy technologies to advanced electronics. Recent statistical data highlights this trend, revealing that global production of rare earth minerals has surged dramatically from 124,000 metric tons in 2015 to an anticipated 390,000 metric tons by 2024. This remarkable 214% increase over the past decade underscores the accelerating pace of REE extraction, smelting, and utilization, driven largely by the global transition towards sustainable energy solutions and the digital revolution.
However, this rapid expansion in REE production comes with significant environmental and health implications. Large-scale mining and industrial processing of these elements have led to their enhanced biogeochemical cycling, resulting in increased concentrations of REEs in the atmosphere, water bodies, soil, and living organisms. This enrichment poses potential risks, particularly in urban environments where industrial activities are concentrated. As cities grow and the demand for high-tech products rises, the accumulation of rare earth elements raises concerns about their potential health impacts on human populations and ecosystems. Experts are calling for urgent attention to these issues, emphasizing the need for sustainable practices in the mining and processing of REEs to mitigate adverse effects on public health and the environment. Addressing these challenges is crucial for balancing the benefits of technological advancement with the preservation of ecological integrity and human well-being.
The rapid growth of high-tech sectors, such as new energy generation and storage as well as electronic information, has stoked a global demand for rare earth elements (REEs), the critical raw materials for these sectors and others (1). Statistical data indicate that global rare earth mineral production, including mining, smelting, and application, skyrocketed from 124,000 metric tons in 2015 to 390,000 metric tons in 2024, a staggering 214% increase over the past decade (2). Moreover, large-scale mining, smelting, and industrial use of REEs have accelerated their biogeochemical cycling, leading to substantial enrichment in the atmosphere, water, soil, and organisms. Against this backdrop of expanding REE mining, processing, and consumption, the enrichment of these elements in urban environments and their potential health impacts demand urgent attention.
