Travelers with a preference for environmentally sustainable practices don’t have a wealth of resources when on the road. As with travel in general, it’s often necessary to carve together information from a variety of sources—from books and magazines to online resources to word of mouth. Sometimes it’s like a treasure hunt to find the ideal...

As soon as I've returned from a trip, I'm usually imagining where to go next. One of the first tools that I use in researching a destination is Google Maps. Even the best guidebooks can't give you the level of detail and overall geography that is made possible through worldwide satellite data. This view of...