Ключевые слова: black, carbon, change, climate, climate change, close up, coal, combustion, concept, crisis, dark, demand, detail, dirty, dirty energy, economy, electricity, energy, environment, fossil fuel, fuel, geology, global, global warming, hand, heat, holding, human, industrial, lump, mineral, mining, natural, non, non renewable, pollution, power, raw, renewable, resource, rock, supply, sustainability, symbol, warming,