Why is there such a gender imbalance when it comes to the Science, Technology, Engineering and Math (STEM) fields? What characterizes a career in math or in science that keeps it male-dominated even today, when women—at least on paper—share the same freedoms as men? What is it about, say, physics that attracts men and repels women?
Is testosterone a required variable for understanding inertia or balancing the Schrödinger equation? Why are there so few women?