Flying comes with a lot of carbon emissions, but not all plane seats are environmentally equal. Seats that take up more space, like business or first class, come with a higher personal carbon footprint than the tightly packed seats in economy. Private jets, which have fewer than 20 seats total, are even more polluting per person. Now a coalition of eight countries has pledged to tax so-called premium fliers as a way to raise funds for climate action.

The countries in the coalition are France, Kenya, Barbados, Spain, Somalia, Benin, Sierra Leone, and Antigua and Barbuda—all members of the Global Solidarity Levies Task Force, a group launched at the COP28 climate conference in 2023. Municipalities have increasingly considered taxes on polluting activities, like private jet use or carbon emissions, as a way to make it less profitable to pollute, and to finance sustainable development........

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