Conservation International has been instrumental in raising awareness and concern about the most environmentally endangered regions and animals throughout the world with its publication of high-quality volumes that combine breathtaking photography with expert scientific analysis. Continuing in this distinguished tradition, Conservation International offers here a new, lushly illustrated volume that examines transboundary conservation areas—environmentally endangered regions that sprawl across international borders and contain multiple protected areas.  Recent studies estimate that there are now 188 transboundary conservation areas in 112 countries, making up about 17 percent of the designated protected areas around the world. This book specifically examines 28 of these areas, found across all continents, from Asia to Antarctica, and in several oceans. Eminent scientists and conservationists contribute detailed histories of the areas, from the birth of the initial conservation efforts to the latest research that reveals new regions and assesses the success of the programs to protect existing ones. Accompanying the analyses are Conservation International’s trademark vibrant full-color photographs that powerfully document these rapidly disappearing treasures.  Following in the footsteps of Hotspots, Wilderness, Wildlife Spectacles, and Hotspots Revisited, Transboundary Conservation is an essential resource for all those concerned about the future of our environment.