Pollution as a travel topic may refer to

• Air pollution as a public health problem and nuisance affecting travellers
• Air pollution as CO2 emissions, in the context of sustainable travel
• Water pollution creating a hazard to travellers who may drink or bathe in contaminated water
• Soil pollution (such as through the use of certain fertilizers) creating a hazard to travellers who may eat contaminated food
• Light pollution as a concern to travellers who pursue astronomy

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