appointed the J. A. Jones Distinguished Professor of Mechanical Engineering. In 1988 and 1989, his peers named two dimensionless groups Bejan number (Be), in two different fields: for the pressure difference group, in heat transfer by forced convection, and for the dimensionless ratio of fluid friction irreversibility divided by heat transfer irreversibility, in thermodynamics. From 1992 to 1996 he published four more books, Convection in Porous Media, Heat Transfer, Thermal Design and Optimization and Entropy Generation Minimization. Constructal law In 1995 while reviewing entropy generation minimization for a symposium paper and writing another paper on the cooling of electronic components, Bejan formulated the constructal law'''. Where electronic components are too small for convective cooling, they must be designed for efficient conduction. The paper provides a method for efficiently designing conductive paths, from smaller paths leading to larger ones. The similarity of the solution to the branching structures seen in multiple inanimate and living things led to his statement of what he calls a new law of nature: "For a finite-size system to persist in time (to live), it must evolve in such a way that it provides easier access to the imposed (global) currents that flow through it." To emphasize the coming together of paths he called the theory constructal from the Latin "to construct", in contrast with approaches using fractal geometry, from the Latin "to break". Bejan incorporated his constructal law into the second edition of his textbook, Advanced Engineering Thermodynamics (1997). Since then he has concentrated on constructal law and its applications. In 2004, he published Porous and Complex Flow Structures in Modern Technologies. The same year, he and Sylvie Lorente were awarded the Edward F. Obert Award by the ASME for their paper "Thermodynamic Formulation of the Constructal Law" In 2008 he published Design with Constructal Theory, a textbook for the course he developed with Lorente at Duke. In 2011 the American Society of Mechanical Engineers presented him with an honorary membership. He was cited for "an extraordinary record of creative work, including the unification of thermodynamics and heat transfer; the conceptual development of design as a science that unites all fields; legendary contributions to engineering education; and, since 1996, the discovery and continued development of the constructal law." Bejan has also written books for the general audience. In 2012 he published Design in Nature: How the Constructal Law Governs Evolution in Biology, Technology, and Social Organization