Daniel Nicholson is a senior research fellow at the KLI. His work is characterized by an integrated and strongly interdisciplinary approach to the history and philosophy of biology. His current research focuses on the ontology of living systems, particularly on the ways in which organisms differ from other complex organized systems like machines, and on the implications that these differences have for biological theory. He also has a longstanding interest in the historical development of theoretical and philosophical reflections on biology. Dan holds a PhD in philosophy (Exeter) as well as masters degrees in history and philosophy of science (Leeds) and molecular and cellular biology (Bath). Prior to returning to the KLI, Dan was a research fellow at the Centre for the Study of Life Sciences (Exeter) and at the Cohn Institute for the History and Philosophy of Science and Ideas (Tel Aviv).