FLYING IS A dirty business. Airliners account for more than 2% of the annual global emissions from the burning of fossil fuels, many times commercial aviation’s contribution to world GDP. Two forces will push this figure up in the years to come.
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First, people love to fly. IATA, the airline industry’s trade body, predicts that 4bn passengers will take to the skies next year, as many as did in 2019, before covid-19 temporarily grounded the sector. Airlines could be hauling around 10bn
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