The document discusses lead, an element commonly found in batteries. It details that lead is soft and corrosion-resistant, making it useful for batteries. Most lead today is used in lead-acid batteries, which were invented in 1859 and power cars and trucks. Though lithium batteries are replacing lead batteries, 75% of old lead batteries are recycled. The lead is recovered and resold to battery makers. Lead and its recycling are important to the world economy, providing jobs in refineries and smelters.