From the carbon footprint of air travel to the problems of increased pollution in common tourist destinations, taking a vacation can have a dramatic, and sometimes negative, impact on the environment. But does it have to? The International Ecotourism Society defines ecotourism as “responsible travel to natural areas that conserves the environment and improves the well-being of local people.” In other words, you are responsible for creating a positive impact on the communities you visit and leaving a place better than how you found it. If you’re on board with these principles of sustainable travel, consider taking an eco-vacation if you haven’t had the chance. Ecotourism supports local conservation efforts…