On 17 February, the world celebrates Global Tourism Resilience Day, designated by the United Nations General Assembly. For many developing countries, including the least developed countries, small island developing states, countries in Africa and middle-income countries, tourism is a major source of income, foreign currency earnings, tax revenue and employment. Because tourism connects people with nature, sustainable tourism has the unique ability to spur environmental responsibility and conservation. Sustainable tourism, including ecotourism, is a cross-cutting...