Prof. Sophia Roosth, history of science, Harvard University, spoke in Kaufmann Auditorium Thursday about the limits of the biological and how we define life in a new age of science, which defy typical expectations and definitions of life. The lecture, titled “Unlikely Life: Interrogating the Limits of the Biological,” focused on several examples of “unlikely life,” such as the development of the T7.1 virus. Led by Prof. Drew Endy of MIT, synthetic biologists developed this virus in order to better understand the T7 virus, Roosth said. “Instead of trying to rebuild the model, Endy’s team wanted to rebuild the phage to be more understandable,” Roosth said. “That’s a symptom of the move to manufacture in the life sciences — comprehensibility becomes a design principle, and making becomes a form of inquiry.