12 places to escape the smog: the world's best car-free islands
Hydra, Greece Fadiouth, Senegal Herm, Channel Islands Holbox, Mexico Ilha Grande, Brazil Fernando de Noronha, Brazil Little Corn Island, Nicaragua Lopud, Croatia Île de Porquerolles, France Marettimo, Italy La Graciosa, Canary Islands Princes' Islands, Turkey
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