title: Reinventing chemistry.
abstract: Chemistry is in a period of change, from an era focused on molecules and reactions, to one in which manipulations of systems of molecules and reactions will be essential parts of controlling larger systems. This Essay traces paths from the past to possible futures.
authors: Department of Chemistry and Chemical Biology, Harvard University, Cambridge MA 02138 (USA). gwhitesides@gmwgroup.harvard.edu.
authors: George M
authors: GM
authors: Whitesides
keywords: change; chemistry; science