How much does a genetically-engineered tomato have in common with your dog? A lot more than you might think.Both are shining examples of PostNatural organisms, a term Rich Pell, assistant professor of Art at Carnegie Mellon, uses to describe living things whose evolutionary path has been controlled by humans. He is the curator of the Center for PostNatural History in Pittsburgh, a one-of-a-kind museum dedicated to classifying, cataloguing, and archiving PostNatural organisms.In this interview, Pell gives a tour of his museum, explains the story of postnaturalism, and discusses visitors’ reactions to his project. This interview was written and recorded by Ellis for the Generation Anthropocene podcast at Stanford University (http://www.stanford.edu/group/anthropocene/cgi-bin/wordpress/).