More women scientists work as professors today than at any time in history. But they’re still underpaid relative to their male colleagues with similar publication records, according to a study of more than 2300 science, technology, engineering, and math (STEM) faculty members. [...]

It’s not clear why women in the study were paid less than men, but the authors suggest men may be more aggressive or successful in their negotiations. [...] In the paper, she and her co-authors urge universities to conduct internal analyses of faculty pay to determine whether highly productive women are being rewarded for their efforts.