Women earned 57.3% of bachelor’s degrees in all fields in 2013 and 50.3% of science and engineering bachelor’s degrees. However, women’s participation in science and engineering at the undergraduate level significantly differs by specific field of study. While women receive over half of bachelor’s degrees awarded in the biological sciences, they receive far fewer in the computer sciences (17.9%), engineering (19.3%), physical sciences (39%) and mathematics (43.1%).
More relevant points appear further down the page which illustrate what people talk about when they lament the underrepresentation of women in STEM:
Women make up half of the total U.S. college-educated workforce, but only 29% of the science and engineering workforce. Female scientists and engineers are concentrated in different occupations than are men, with relatively high shares of women in the social sciences (62%) and biological, agricultural, and environmental life sciences (48%) and relatively low shares in engineering (15%) and computer and mathematical sciences (25%).
For example:
35.2% of chemists are women;
11.1% of physicists and astronomers are women;
33.8% of environmental engineers are women;
22.7% of chemical engineers are women;
17.5% of civil, architectural, and sanitary engineers are women;
17.1% of industrial engineers are women;
10.7% of electrical or computer hardware engineers are women; and
7.9% of mechanical engineers are women.