There are more postdocs than faculty positions available in many countries.Credit: Lanshi Wu/AlamyMore than 40% of postdoctoral researchers leave academia, according to a study of some 45,500 researchers’ careers1. Those who stayed and landed a coveted faculty position were more likely to have had a highly cited paper, changed their research topic between their PhD and postdoc, or moved abroad after receiving their doctorate.The study, published in Proceedings of the National Academy of Sciences...