Martin's original academic field was theoretical physics, and he worked in both stratospheric modelling and numerical methods during his career. He has published extensively about the social dynamics and politicisation of controversial scientific topics. His topics of inquiry have included the globalization of polarised science such as the origin of HIV/AIDS. He argues that there are situations in which scientific research that threatens vested interests can be suppressed. He identifies a number of direct and indirect mechanisms through which this can occur, ranging from the denial of funds and the denial of promotion and tenure, through to the creation of a "general climate of fear". Martin's work on in this area has provided what Delborne describes as a "key foundation for conceptualizing scientific dissent".