Six Johns Hopkins University researchers have been elected by their peers as fellows of the American Association for the Advancement of Science. They are Aravinda Chakravarti, a professor in the departments of Medicine, Pediatrics, and Molecular Biology and Genetics in the School of Medicine, and the Department of Biostatistics in the Bloomberg School of Public Health; Peter J. Espenshade, a professor of cell biology and associate dean for graduate biomedical education in the School of Medicine; Alex Leo Kolodkin, a professor of neuroscience in the School of Medicine and a Howard Hughes Medical Institute investigator; Jin Zhang, a professor in the departments of Pharmacology and Molecular Sciences and of Neuroscience in the School of Medicine and a professor of oncology in the Johns Hopkins Kimmel Cancer Center; Margaret Meixner, a full astronomer at the Space Telescope Science Institute and a principal research scientist in the Henry A. Rowland Department of Physics and Astronomy; and Daniela Drummond-Barbosa, an associate professor in the Department of Biochemistry and Molecular Biology at the Bloomberg School of Public Health. The association's 401 newly elected fellows will each be awarded a certificate and a rosette pin during the AAAS Fellows Forum on Feb. 14 at the 2015 AAAS annual meeting in San Jose, California.