Greg Graffin

Bad Religion's singer built an academic life alongside the band's career, earning a doctorate and teaching evolution at UCLA and Cornell. Cornell's account of his evolution course makes the second profession concrete: there were students, a syllabus and classroom responsibilities behind the unusual combination. His books extend that engagement with science and belief. Start with the teaching and writing for an example of two careers feeding the same curiosity, while still requiring very different forms of preparation and public explanation.