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Center for Nanoscale Materials Division Director Amanda Petford-Long (right) leads a tour of the CNM for Idaho National Laboratory Director John Grossenbacher (middle) and INL Deputy Director David Hill on February 18, 2010.

Lise Meitner. Along with Otto Hahn, Lise Meitner (1878-1968) discovered that uranium atoms were split when bombarded with neutrons. The discovery eventually led to the atomic bomb. The Granger Collection, New York. Photos from: "Ten Historic Female Scientists You Should Know" »

Yuko Shiroyanagi (right) and Chuck Doose of the Accelerator Science Division prepare the magnetic measurement test stand. Testing ensures that the super-conducting undulator for the Advanced Photon Source upgrade will meet the high-precision requirements needed to generate the world's brightest X-rays above energies of 25 keV.

Jennifer Salazar is a Coordinating Writer and Editor in Argonne’s Computing, Environment and Life Sciences directorate. "I've found that our researchers want to share what excites them and communicate it to others in the wider research community or to the public, and this offers a great environment for a writer," she said.

Nuclear engineer Laural Briggs reviews pressure distribution results from a 217-pin fuel assembly simulation. The simulation was computed by Argonne's Nek5000 large eddy simulation tool on the IBM Blue Gene/P Intrepid supercomputer.

Ann Schlenker, Director of Argonne's Center for Transportation Research, welcomes President Obama to the podium during his visit to the lab on March 15, 2013.