Featuring articles on genetic variation and life span in Iceland, botulinum toxin for head tremor, decolonization in nursing homes to prevent infection, nivolumab plus chemotherapy in urothelial carcinoma, pembrolizumab in pregnancy, and on after affirmative action; a review article on catatonia; a case report of a woman with loss of consciousness and thrombocytopenia; and Perspective articles on how the FDA should evaluate psychedelic medicine, on federal oversight of laboratory-developed tests, and on the corporate divorce between two major Boston medical institutions.