How Red Mud Can Help Lock Up Nickel in Soil
Soil pollution is a big deal, and nickel is one of those tricky metals that can cause problems. Scientists have been looking into how to manage nickel better in the soil. One interesting solution? Bauxite residue, also known as "red mud. " This stuff is a leftover from aluminum production, and there's a lot of it—over 4 billion tons by 2022. Red mud has some cool pr...