EditorialDetlef Knappe, a researcher at North Carolina State University who has focused on PFAS, leads students to collect water samples at the William O. Huske Dam in Fayetteville, N.C. on July 15, 2021. (Ed Kashi/The New York Times)
EditorialWilhelm Busch, playbill for the knight's stirring play Das graue Geheimni? oder Der verm?rtelte Knappe by O. St?ger, paper, lithography, sheet size: height: 35,3 cm; width: 22,3 cm, inscribed: recto: in lead: Jung-M?nchen Wilh. Busch? Munich, playbill,...