  The topic of unity in the sciences can be explored through the following questions: Is there one privileged, most basic or fundamental concept or kind of thing, and if not, how are the different concepts or kinds of things in the universe related? Can the various natural sciences (e.g.,physics, astronomy, chemistry, biology) be unified into a single overarching theory, and can theories within a single science (e.g., general relativity and quantum theory in physics, or models of evolution and development in biology) be unified? Are theories or models the relevant connected units? What other connected or connecting units are there? Does the unification of these parts of science involve only matters of fact or are matters of value involved as well? What about matters of method, material, institutional, ethical and other aspects of intellectual cooperation? Moreover, what kinds of unity, not just units, in the sciences are there? And is the relation of unification one of reduction, translation, explanation, logical inference, collaboration or something else? What roles can unification play in scientific practices, their development, application and evaluation? 