With the increase of low-cost, short-haul airline flights beginning in the 1950s, air traffic is becoming a significant source of CO2 emissions. A study conducted by French researchers found planes emit 77 times more CO2 per passenger than trains for journeys lasting under four hours. But there is a shift towards rail travel. After the pandemic, 47% of U.K. travelers reported that they wish for a slower pace of life that was more appreciative of nature. "Many are finding that you don't have to suffer to save the planet it's pleasurable to take the train," says Mark Smith, who is also known as the Man in Seat 61. Low-carbon train companies such as Lumo are focusing on affordable travel, with some 60% of train fares costing

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