* Women comprise only slightly more than one third of PhD students at large American research universities.
* Women in STEM fields complete their PhDs at notably lower rates -- somewhere between seven and nine percent -- than men.
As overheard by me, care of two female STEM graduate students on the patio of a local coffee shop...
"Do you know what her P.I. said?"
"'After everything we've done for her, I can't believe she's pregnant.'"