The conversation between Sandra Abell and Patricia Friedrichsen took place at the University of Missouri, U.S., on December 19, 2007. The purpose of this dialogue was to reflect on Dr. Abell's career in science education and her research on science teacher learning. During the conversation, Sandra Abell discussed changes in research in this field, the usefulness of the pedagogical content knowledge construct, as well as directions for future research. The text includes a brief summary of Sandra Abell's career achievements, a list of our conversation topics, the transcript of the audio-taped conversation, as well as a list of Dr. Abell's selected publications.