In 2009, Southwest Airlines unveiled an ambitious plan to switch out its original Boeing 737 cabin in favor of a sustainable one called the Green Plane. Two years later, the airline has finished rigorous tests of lighter, recyclable aircraft components and tallied survey results from passengers who commented on the new amenities. The project has culminated in Evolve, an interior design that includes newly engineered seats, carpets and bulkheads. The new look is one of both form and ...


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