Recent research led by West Virginia University explores new sources of lithium, such as mine tailings and drill cuttings, in light of the increased demand for this critical mineral, essential for lithium-ion batteries used in electric vehicles and storing renewable energy. The findings reveal unexpectedly high concentrations of lithium in pyrite minerals within shale. This discovery could lead to sustainable mining practices that do not require new mines, emphasizing the potential for lithium-sulfur batteries and promoting environmentally friendly resource extraction.