"Today, more than half of all PhDs in the life sciences are awarded to women, compared to a measly 13 percent bestowed upon women in 1970. However, women still lag far behind men in full professorships and tenure track positions in math-intensive fields. Despite claims that this disparity is due to discrimination against women in the processes of publication, grant review, interviewing, and hiring, a review in PNAS last week, written by Stephen Ceci and Wendy Williams of Cornell University, finds that there is actually little evidence for sex discrimination in these areas, and concludes that women’s underrepresentation stems from other causes."