to my knowledge, careers in engineering have always been a better route to upward mobility than pure science. if you look at the largest private sector employers of non medically related scientists (oil and gas, petrochemical, other extractive industries) you see that for both men and women the route to the job at the top is the engineering route, not chemist, geologist, or biologist.
but, the articles above seem to be implying that female scientists are proportionately underpaid vis a vis their male counterparts. I think that if you look more closely and coorelate longevity of employment, patents, degree level, etc ,you find that as in most areas in the economy - there is no pay disparity between males and females in today's job market.