Our Science, Technology, Engineering and Math (STEM) workforce is crucial to America’s innovative capacity and global competitiveness. Yet women are underrepresented both in STEM jobs and STEM undergraduate degrees and have been consistently over the last decade, despite making up nearly half of the U.S. workforce and half of the college-educated workforce. By the time girls mature into career seeking women, they are left behind. Women represent 48 percent of the workforce, but only 24 percent of STEM jobs. Why we are still worried about women in science? We have not solved the problems that kept women out of science decades ago.