The Role of Lignin for Fire, Explained
Carboniferous Period, charcoal, conduction, convection, evaporative cooling, fire, Fire-Maker series, fire-making, fitness, Goldilocks, humus, industrial age, Intelligent Design, iron, Life Sciences, lignin, metallurgy, metals, nature, organic compounds, oxygen, photosynthesis, physiology, plant cells, pottery, radiation, steam engine, trees, wood, woody plants
Without lignin, there would be no woody plants, no wood, no coal, no charcoal, no fire, no pottery, and certainly no iron or metallurgy. Source