Five Cornell faculty members are among 203 new fellows elected to the American Academy of Arts and Sciences for 2007 in honor of their distinguished contributions to their professions.

This year's honorees, who will be inducted Oct. 6, are: Héctor D. Abruña, the Emile M. Chamot Professor of Chemistry and chair of the Department of Chemistry and Chemical Biology; Stephen T. Emlen, the Jacob Gould Schurman Professor of Neurobiology and Behavior; Isabel V. Hull, the John Stambaugh Professor of History; Jon Kleinberg, professor of computer science; and Stephen B. Pope, the Sibley College Professor of Mechanical and Aerospace Engineering.

Abruña's research areas include fabricating nanoscale circuits from the molecular level up using both organic and inorganic conductors; making improved solid-state organic light-emitting materials; and finding new catalysts for fuel cells. He is co-director of the Cornell Fuel Cell Institute. He completed his graduate studies at the University of North Carolina at Chapel Hill in 1980 and came to Cornell in 1983.

Emlen is a world authority on the social behavior of animals. In his early work he conducted extensive research on the orientation and navigation capabilities of migratory birds, and communication in bird song. His interests then shifted to behavioral ecology His research interests now revolve around understanding the adaptive significance of social behaviors in animals and applying this to an understanding of human families.. He earned his Ph.D. in zoology from the University of Michigan.

Hull is an expert on the history and social structure of Germany, especially its military culture. She is the author of "Sexuality, State and Civil Society in Germany, 1700-1815" and "Absolute Destruction: Military Culture and the Practices of War in Imperial Germany." Both books have won multiple awards. She earned her Ph.D. from Yale University in 1978.

Kleinberg's research includes ways to reduce congestion on complex networks like the Internet, and methods for searching large, complex databases. A current project deals with the sociology of the Web. As a member of Cornell's computational biology research group, he has worked on protein folding and the databasing of proteins by their three-dimensional shapes. He is one of the developers of an algorithm that underlies the workings of major Web search engines. In 2005 Kleinberg, who received his Ph.D. from the Massachusetts Institute of Technology in 1996, received a MacArthur Foundation "genius" award.

Pope is an internationally recognized authority in the fields of turbulent flow and turbulent combustion. He has made major contributions to the field using the Direct Numerical Simulation technique and is the world's leading expert in the development of the probability-density-function method for the prediction of turbulent flows. This method is increasingly being used by industries requiring detailed knowledge of combustion processes in automotive and gas-turbine engines. Pope completed his graduate education at Imperial College, London.

Fellows are nominated and elected to the Academy by current members. The current membership includes more than 170 Nobel laureates and 50 Pulitzer Prize winners. The current membership list includes 70 present and former Cornellians.