By Siri Carpenter—My path to becoming a professional writer was a wayward one. Toward the end of my undergraduate career at the University of Wisconsin-Madison, where I was a psychology major in the early 1990s, I had the sudden inspiration that I wanted to be a writer. But when a friend asked me a perfectly reasonable question—“What do you want to write about?”—I was stumped. I stammered that I figured I’d write about . . . uh . . . whatever seemed interesting, and that . . . hrmmm . . . I was especially interested in science. […]