The Biosphere certification system follows the principles of sustainable development: social and economic accountability, protection of cultural assets and environmental stewardship, tourist satisfaction and the betterment of host communities. Certification is managed by the Responsible Tourism Institute under the terms of a memorandum of understanding with UNESCO. Biosphere Responsible Tourism is the first certification body approved by the Global Sustainable Tourism Council, which also recognizes the label “Biosphere Hotel".

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Green Globe is an international certification program for the travel and tourism industry. It is based on stringent criteria and encompasses sustainable development, economic and social issues, cultural heritage and the environment.

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The Green Key Eco-Rating Program recognizes efforts by hotel establishments to improve their social and environmental management. Participants complete an online self-assessment questionnaire and may subsequently undergo on site inspection. In return, they are awarded a rating of 1 to 5 Green Keys and provided with guidance on how to reduce their green footprint.

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The ISO 14001: 2004 standard was designed to guide any type of organization seeking to develop an environmental management system. This standard provides assurance that an organization’s environmental impact is being formally monitored with the aim of continuously improving resource use, waste treatment, supply-chain management, etc.

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Travelife is an international label designed by and for the travel industry. This efficient certification system helps managers in the lodging sector measure and track their social and environmental performance. The certification process involves an online questionnaire as well as third-party auditing of establishments.

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Blue Flag is an international sustainable management program for beaches and marinas. Some 3,800 sites in 46 countries have been awarded the Blue Flag eco-label after demonstrating their compliance with a set of criteria covering such aspects as environmental education to safety, accessibility, quality of facilities and maintenance, as well as water and waste management.

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