Darrin York attended TheoBio17 in Donostia/San Sebastian, Basque Country Spain from June 26-June 30. His plenary talk was titled "Diverse Catalytic Strategies of RNA Enzymes: Recurring Themes and New Twists." The scope of this congress is on the modeling of biological, biochemical and biophysical systems, ranging from electronic structure to mesoscopic coarse grained systems and beyond from both an application and a methodological point of view. More information about this meeting can be found at their website: http://theobio17.dipc.org/