Postscripts reported it first that marriage proposals have been placed in the acknowledgments

One such proposal published in a 2015 paper in Current Biology reads: “C.M.B. would specifically like to highlight the ongoing and unwavering support of Lorna O’Brien. Lorna, will you marry me?”

Another postscript in Global Change Biology is more worrying

Jos Barlow, a conservation scientist from Lancaster University in the U.K. and the Federal University of Lavras in Brazil, who led the team, wrote in the acknowledgement: “Some contributors declined authorship to maintain anonymity. We regret this was necessary and thank them for their important contribution.”