Krzysztof Rykaczewski has degrees in physics and nuclear physics from the University of Warsaw (UW), Warsaw, Poland, as well as a Professor title granted by the President of Poland. He was an academic teacher at the Faculty of Physics (UW) between 1978 and 1997 and conducted research at several European nuclear laboratories including GSI Darmstadt (Germany), GANIL Caen (France), and ISOLDE-CERN (Geneva, Switzerland). Since 1997 he has been a decay spectroscopy task leader at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory (Oak Ridge, TN). He was named a Fellow of the American Physical Society in 2007. His research is mostly related to the decay spectroscopy of exotic radioactive nuclei, and has resulted in the identification and first decay study of over 50 new isotopes.