A team of researchers with members from BRGM, Orléans, EDF, EDF R&D, 77818, Moret sur Loing and Université Grenoble-Alpes, all in France, has found a possible way to trace sources of commercial lithium to determine whether it comes from an ethical source. In their paper published in the journal Nature Communications, the group describes their study of the possibility of using lithium isotopic signatures to trace its roots.