Biological infrastructure, put plainly, is the infrastructure that supports biology. As such, biological infrastructure encompasses many different things. In terms of resources for research, it can include biological informatics, cyberinfrastructure, museum collections, living stock collections, field stations, marine labs, and instrumentation, all of which act to support and advance biological research. But biological infrastructure also relates to the human resources that make up the scientific workforce in the field of biology. The Division of Biological Infrastructure supports the development of this workforce by supporting fellowships for postdoctoral research, research experiences for undergraduates, and research coordination networks in undergraduate biology education. Finally, biological infrastructure also includes biology centers and other mid- to large- scale infrastructure, existing either physically, virtually, or both, that address a particular scientific and educational mission and/or designed to meet a particular community need in the biological sciences.