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Global warming: New supersonic airplanes would be terrible for environment, study warns

January 30, 2019 / Elizabeth Weise

At least three companies are hoping to bring supersonic airplanes back into the skies, but environmental groups worry their return could mean a big increase in greenhouse gasses from aviation. The issue is expected to come to the fore next week as international regulators meet in Canada beginning Monday to discuss environmental and noise standards for the newly-revived supersonic transport technology.The International Council on Clean Transportation  released a study on the climate impacts of a creating a new commercial supersonic network Wednesday in anticipation of the meeting.Supersonic jets fly faster than the speed of sound and at higher altitudes. The jets could fly from Paris to New York in three and a half hours, less than half the eight hours a conventional commercial jet would take.