For decades, writes Tom Rickey, NWChem has been the go-to software for computational chemists who need atom-level visualizations of molecules. A scientist at Pacific Northwest National Laboratory who developed NWChem is now giving the software a boost, writes Tom (@trickeyPNNL). Version NWChemEx will be used to study the molecular processes of biofuel production and will be able to run on computing systems with up to hundreds of millions of processors. image: Jitendra777