The rapid growth of the tourism industry that characterized the late twentieth and early twenty-first century can be correlated with the unprecedented development of economy, urbanization, followed the trend of increasing income population to leave by reducing working time.
This economic prosperity, especially developed countries, imposed an accelerated development and tourism with low cost of transport, information and technology explosion, marked by an interest rate of 9% of the inputs / year. Tourism provides about 10% of national income to global economic activity is one of the first products for "export" in over 150 countries, of which 60 are the most important economic sector, providing about a quarter of a million jobs work (TIES, 2007).
But while this development as a whole, involved and requires environmental costs that may affect long-term tourism. Local air pollution or global (global warming, ozone loss) endangering the induced effects (melting ice caps, raising sea level, biodiversity loss, increased activity cyclones etc) many tourist destinations on Earth. Damage to the hydrosphere, due to anthropogenic pressures, or soil, vegetation, wildlife are issues that require immediate resolution, because they affect the life, man, the branches of economy, tourism default.
Between environment, tourism, human relationships are complex, interdependence, reciprocity, etc.., But the problem remains essential in keeping the balance of the natural environment because there is no environmental tourism. Besides working poor socio-economic systems in general and even threatening tourism future, primarily by the flow of tourists, extremely high in some destinations or hotel etc. Megastructures.