Ключевые слова: aeronautic, aeroplanes, air, aircraft, atmosphere, background, black, business, carbon, carbonfootprint, co2, controversial, crowd, emission, emissions, energy, environment, environmental, evolution, fast, flight, fly, flying, foot, footprint, fuel, gas, global, green, heavy, holidays, impression, imprint, jets, lone, monoxide, oil, one, oneway, outdoors, petrol, planes, pollution, prices, print, sky, smoke, sole, stepping, technology,