• ELECTRONICS
    Harmless elements can replace toxic lead in electronics

    Henrik Soensteby holds a silicon wafer covered with a thin film consisting of sodium, potassium, niobium and oxygen. The colors are caused by unintentional thickness variations. Credit: Bjarne Roesjoe/UiO Most smartphones and other electrical or electronic products contain small amounts of lead, which doesn’t sound like a big problem on its own. But when there […]