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Today, we live in a world of prosperity but still threatened by so many new problems. On the one hand, tourism, as one of the most promising industries in the 21st century, provides people with the great opportunity to see everything there is to see and to go any place there is to go. It has bee a lifestyle for some people, and has turned out to be the driving force in GDP growth. It has the magic to turn a backward town into a wonderland of prosperity. But on the other hand, many problems can occur natural scenes arenamp。39。t natural anymore. Deforestation to heat lodges are devastating Nepal. Oil spills from tourist boats are polluting Antarctica. Tribal people are forsaking their native music and dress to listen to U2 on Walkman and wear Nike and Reeboks. All these appalling facts have brought us to the realization that we can no longer stand by and do nothing, because the very thought of it has been eroding our resources. Encouragingly, the explosive growth of global travel has put tourism again in the spotlight, which is why the United Nations has made 2020 the year of ecotourism, for the first time to bring to the worldamp。39。s attention the benefits of tourism, but also its capacity to destroy our ecoenvironment. Now every year, many local ecoenvironmental protection organizations are receiving donations big notes, small notes or even coins from housewives, plumbers, ambulance drivers, salesmen, teachers, children and invalids. Some of them cannot afford to send the money but they do. These are the ones who drive the cabs, who nurse in hospitals, who are suffering from ecological damage in their neighborhood. Why? Because they care. Because they still want their Mother Nature back. Because they know it st