Ключевые слова: alternative, atmosphere, care, clean, clean energy, climate, conservation, ecology, ecosystem, electric, emission, energy, engine, environment, environmental, environmentally friendly, exhaust, footprint, gas, generation, generator, global, green, greenhouse, hybrid, industry, innovation, monoxide, motor, nature, plant, pollution, power, preservation, protection, radiation, renewable, solar panel, steam, supply, sustainability, technology, transportation, vehicle, warming, zero,