This is another organization that provides flexible and customizable abroad experiences. There are volunteer and internship opportunities that can last as little as 2 weeks or as much as more than 6 months. They have projects offered on very continent (except for Antarctica). They also have "expeditions" which seems to be a combination of volunteering and tourism with a group, they mostly focus on environmental and wildlife themes but there are community expeditions.
http://www.gviusa.com/
Volunteering:
- with Children (teaching, arts, sports, social work, childcare)
- climate change
- marine conservation
- Teaching English abroad
- Construction
- Community
- Wildlife and Conservation
Internship:
- Environmental
- Non-profit
- Humanitarian
- Responsible Business
