Nathan Williamson (above) is a freelance assistant specializing in remote-camera photography. He graduated magna cum laude from Macalester College in 2000, and received a Fulbright Fellowship the following year to document efforts to curb deforestation in the Bolivian Amazon. His first assignment for National Geographic came in 2003, when he traveled with Nick Nichols and Dr. Michael Fay to document Gabon’s newly created National Park system. He has subsequently assisted National Geographic photographers on seven assignments.