How we're learning to use fungi for more sustainable design Fungi built the first soils, hold ecosystems together, and now offer practical tools for food, medicine, materials, and pollution control. We've been using them for millennia, and now more weird and wonderful uses are emerging. What fungi are Fungi belong to their own kingdom. They don't make food from sunlight, and they don't swallow it as animals do. They grow as fine filaments called hyphae that spread through
