American Ethnologist features an article by Chantal Collard and Shireen Kashmeri, which examines how the practice of embryo adoption spurs new models of siblingship that the authors call: genetic, batch, gestational, and delayed siblingship. This issue also features book reviews of Tsipy Ivry’s “Embodying Culture: Pregnancy in Japan and Israel,” and of Marina de Regt’s “Pioneers or Pawns? Women