Ключевые слова: alternative, atom, biology, chemical manufacturing, chemistry, clean, eco, ecology, emission, environment, formula, fuel, future, futuristic, gas, generator, green energy, h2, hydrogen, innovation, laboratory, letter, line, modern industry, molecule, nonpolluting, organic, outline, plant, power, renewable, research, science, shape, sign, source, station, sustainability, sustainable, symbol, technology, transport, transportation, vector illustration, vitality, water, zero emissions,