Ever since I was appointed Director of the Program on Science, Technology and Society at Cornell University in 1988, I have participated in building STS as a distinct field of scholarship. I have been fortunate to play a foundational role in building several new institutions for STS teaching and training. In 1991, I helped found the Department of Science and Technology Studies at Cornell, which I subsequently chaired for seven years. At Harvard, I founded the Program on Science, Technology and Society in 2002 and, with a growing roster of faculty affiliates, established the Secondary Field in STS in 2010. Working with a circle of close international colleagues, and increasing numbers of current and former students and fellows, I established the Science and Democracy Network in 2002. More recently, I have worked with students and colleagues to develop a web-based portal for exchanges among STS scholars on issues of contemporary political and policy significance: STS Next 20.org.