NEW YORK (CNNMoney) -- High school senior Mimi Yen spends a lot of time thinking about worm sex.
At Yen's lab at New York University, where she studies worms under a microscope after school, she can point out which ones are hermaphrodites.
Yen's career plans are set: She is pursuing a career in the sciences -- a field still dominated by men.
Overall, women make up nearly half the U.S. workforce. But they hold less than a quarter of the jobs in science, technology, engineering and math.
And those jobs pay well, too: The average annual income of a college-educated worker in the sciences is $74,000, compared to $59,000 for college grads in other fields, according to federal data. (Related: 25 top-paying jobs)
"In the classroom setting, a lot of the people who raise their hands are boys," said Yen.
More video about jobs and the sciences:
|What we want Apple to unveil at WWDC|
|Millennials squeezed out of buying a home|
|7 traits the rich have in common|
|Big Data knows you're sick, tired and depressed|
|Your car is a giant computer - and it can be hacked|
|Overnight Avg Rate||Latest||Change||Last Week|
|30 yr fixed||3.85%||3.87%|
|15 yr fixed||2.96%||2.98%|
|30 yr refi||3.96%||4.00%|
|15 yr refi||3.06%||3.08%|
Today's featured rates:
|Latest Report||Next Update|
|Home prices||Aug 28|
|Consumer confidence||Aug 28|
|Manufacturing (ISM)||Sept 4|
|Inflation (CPI)||Sept 14|
|Retail sales||Sept 14|