web Ecologist Gregory Asner shows pope Francis a detail of a map from the coral reef atlas - credit Vatican Media .JPG

Ecologist Gregory Asner of Arizona State University shows Pope Francis a map from a new atlas of the world's coral reefs in August at the Vatican. (Courtesy of Vatican Media)
Ecologist Gregory Asner of Arizona State University shows Pope Francis a map from a new atlas of the world's coral reefs in August at the Vatican. (Courtesy of Vatican Media)