Scientists can create and test millions of new molecules to identify those useful for studying biology and new medicines. Designing and screening new molecules demands powerful information systems to keep track of all the data generated. Dr. Stuart Schreiber describes ChemBank, a new project designed to gather information that links proteins, small molecules and the functions that they affect in organisms. He suggests that in the future a synergy of chemistry, biology and computational science will help scientists view biological systems in a way that may lead to a new era of medicine. From the Series:HHMI’s Understanding Biomedical Research Series