But, the aviation lobby argues, trying to damp down the growth in aviation will restrict people's freedom to fly. Stuff and nonsense. There is no God-given right to fly round the world at fares which do not reflect the damaging environmental effects caused by commercial aircraft. The European Environment Agency has calculated that the damage in terms of pollution, noise, land use and so on caused by a person flying 700 miles is more than £30. If air travel were taxed to take that into account, it would add around £75 for the average flight to Spain or Italy.