As part of the Chicago Project, and using film that was shot at the Fox River in Illinois, photographer Peter Hoffman created an interesting process in developing his work. "Fox River Derivatives is a series that questions our relationship with our natural resources. Using the theme "Water and Oil", with consideration to the large BP Oil Spill in the Gulf of Mexico in 2010, the images are part of a larger experiment that utilizes water and fossil fuels in the actual image-making process, letting these substances become an important variable in the visual representation. Photographs are made along the Fox River which passes through both untouched rural areas and consumer-oriented suburban sprawl." (thank you to foxisblack)