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Rare Earth Elements Reveal New Roles in Technology, Biology and the Origins of Life What Are Rare Earth Elements and Why They Matter Rare earth elements, commonly known as REEs , consist of a group of 17 elements that share closely related chemical characteristics. Alongside the two lightest members, scandium and yttrium, the group includes elements such as lanthanum , cerium and neodymium , as well as the radioactive element promethium . Despite their name, rare earth elements are not actually scarce in the Earth's crust. Instead, their significance lies in the uneven distribution of their deposits across the globe, giving them considerable geopolitical importance . REEs play a vital role in modern technology, powering everything from smartphones and powerful magnets   —  including those used in wind turbines — to catalysts and advanced optical components. Ongoing reporting on critical minerals, sustainability and future technologies can be found at FSNews365 , which r...