Paul R. Ehrlich
Hope on Earth
Abigail Foerstner teaches science and environmental journalism at Northwestern University. She is the author of Picturing Utopia: Bertha Shambaugh and the Amana Photographers and James Van Allen: The First Eight Billion Miles.
John Rohrbach is Senior Curator of Photographs at the Amon Center Museum in Fort Worth, Texas. He is the author or coauthor of several books, including Accommodating Nature: The Photographs of Frank Gohlke and Eliot Porter: The Color of Wildness.