Étienne Klein, a prominent French physicist and science communicator, has lost his doctorate after a 20-month investigation revealed plagiarism in his Ph.D. thesis. Klein has faced plagiarism accusations in his popular science writing since 2016.

All in-person examinations at Princeton will be proctored starting July 1, marking the first significant change to the honor system since its establishment in 1893. This decision was made after a faculty vote requiring instructor supervision, with only one opposing vote.