According to 2011 findings by the Economics & Statistics Administration, less than 25% of STEM (science, technology, engineering, and mathematics) jobs are held by women — even though they make up more than half the workforce and college degrees.
Thanks to @LisaDuty1 for finding this. There are very few women in STEM, and even those are who are in STEM careers (and this includes technical communicators) can find it difficult breaking into the "boys club". More women need to be in STEM careers, so I heartily support resources like these. I plan to look into some of these resources myself!