Cornell professors Jon Kleinberg and Paul McEuen, and Weill Cornell professor Carl Nathan, M.D., are among 72 new members of the National Academy of Sciences, announced May 3. Election to the academy recognizes scientists' "distinguished and continuing achievements in original research."

Kleinberg, the Tisch University Professor in the Department of Computer Science, researches issues at the interface of networks and information, with an emphasis on the social and information networks that underpin the Web and other online media.

Kleinberg is a member of the National Academy of Engineering and the American Academy of Arts and Sciences. In 2005, he received a MacArthur "genius" fellowship from the John D. and Catherine T. MacArthur Foundation. He has also received Packard and Sloan Foundation fellowships and has been a recipient of the Nevanlinna Prize, ACM-Infosys Foundation Award and National Academy of Sciences Award for Initiatives in Research.

McEuen, the Goldwin Smith Professor of Physics and director of the Kavli Institute at Cornell for Nanoscale Science and the Laboratory of Atomic and Solid State Physics (LASSP), studies the electrical and mechanical properties of carbon nanomaterials.

McEuen's group has conducted seminal studies of carbon nanotubes, quantum dots and single molecules. Recently he discovered that single photons can create multiple electron-hole pairs in carbon-nanotube photodiodes, suggesting a new strategy for enhancing efficiency in photovoltaic devices.

McEuen was awarded the Agilent Technologies Europhysics Prize in Condensed Matter Physics in 2001. He has served on the executive committee of the Center for Nanoscale Systems since 2002 and leads interdisciplinary research groups in the Cornell Center for Materials Research and the Center for Nanoscale Systems. He was appointed Goldwin Smith Professor of Physics in 2008 and director of the Kavli Institute and LASSP in 2010.

Nathan, chairman of the Department of Microbiology and Immunology at Weill Cornell Medical College, studies host-pathogen interactions along with an interdisciplinary team that seeks to bring immunology, microbiology, biochemistry, structural biology and chemical biology to bear on tuberculosis.

Those elected to the academy this year bring the total number of active members to 2,113, and the total number of foreign associates to 418.