The Marine Biological Laboratory (MBL) is a world-renowned center for biological discovery and training that is notably affiliated with more than 60 Nobel Prize winners. Research is conducted by full-time faculty as well as hundreds of the world's leading scientists who are attracted by the MBL's unique resources and strengths, and who come to the MBL to conduct research for weeks or months at a time. Their work spans biological scales from molecules and cells to ecosystems. The MBL trains students from high school to postdoctoral levels. Central to the MBL's identity are its advanced graduate level research courses.