You can teach English, build hiking trails, conduct whale research or engage in an archaeological dig - there are so many opportunities for field research and volunteering. And they are more than just an opportunity to fill your gap year or baby sit. Educators, students and professionals can find placements that require specialized skills or will build new ones.
Whatever you do, the idea is to develop or impart knowledge and find ways to connect with and engage in developing nations. Not only does it channel the skills of volunteers to regions where they are needed, but it’s also part of a growing social consciousness among travelers. Happily it’s become an important part of the travel market.