Air pollution and noise
Transport by air, road, and rail is continuously increasing in response to the rising number of tourists and their greater mobility.
Tourism now accounts for more than 60% of air travel.
One study estimated that a single transatlantic return flight emits almost half the CO2 emissions produced by all other sources (lighting, heating, car use, etc.) consumed by an average person yearly.
Air pollution from tourist transportation has impacts on the global level, especially from CO2 emissions related to transportation energy use.
And it can contribute to severe local air pollution.
Noise pollution from airplanes, cars, buses, (+ snowmobiles and jet skis)
In addition to causing annoyance, stress, and even hearing loss for humans, it causes distress to wildlife and can cause animals to alter their natural activity patterns.