EditorialGuo Meiyan and her husband before an in vitro fertilization procedure (IVF) at Beijing Perfect Family Hospital, on Nov. 23, 2022. (Andrea Verdelli/The New York Times)
EditorialNathalie Carpenter, who used an endometrial receptivity analysis ahead of two in vitro fertilization cycles, in Old Greewich, Conn. on Nov. 30, 2021. (Yehyun Kim/The New York Times)
EditorialTitle page from Christian Konrad Sprengels 'The discovered secret of nature in the construction and in the fertilization of the flowers', signed: Drawn v. Chr., C.K., Sprengel, W. Arndt Sculp, Fig. 1, before p. 1, Sprengel, Christian Konrad (gez.); Arn...
EditorialAmphiprion sebae, Print, Amphiprion sebae, also known as the sebae clownfish, is an anemonefish found in the northern Indian Ocean, from Java to the Arabian Peninsula. Like all anemonefish it is usually found living in association with sea anemones. Wh...