Algae fertiliser Researchers in Europe are making new fertilisers from algae that grow on wastewater. In France, farmers test algae powder made from dairy waste. The algae eat the organic matter, then become a powder rich in nitrogen. This powder, when mixed with mineral fertilizers, keeps the same crop yield but reduces mineral use by 25%. Algae powder is slower than normal fertilizer, so farmers need more planning and skill. But they can move it to other places and use it where sewage sludge is not allowed. In Spain, scientists at a water plant in Ourense recover nitrogen and phosphorus from wastewater and turn them into ammonium sulphate for farming. These new methods may cut pollution, save energy, and help Europe depend less on imports. Difficult words 📌 ✅ fertilizer /ˈfɜːtəlaɪzə(r)/ food for plants ✅ nitrogen /ˈnaɪtrədʒən/ gas in the air which plants need to grow ✅ yield /jiːld/ food or products which a farm or factory produces ✅ sewage sludge /ˈsuːɪdʒ slʌdʒ/ thick, dirty wa