Leah Ceccarelli's On the Frontier of Science: An American Rhetoric of Exploration and Exploitation opens with an excerpt from Mario Cuomo's keynote address at the 1984 Democratic National Convention. The speech is perhaps best known for its response to Ronald Reagan's iconic vision of America as a ''shining city on a hill''; what interests Ceccarelli, however, interests Ceccarelli, however, is not Cuomo's Dickensian ''tale of two cities''-a powerful trope that continues to resonate in contemporary political discourse-but rather the way he uses frontier imagery to galvanize support for the Democratic party platform. The speech makes no reference to scientific frontiers in particular, but for Ceccarelli, it exemplifies the pervasiveness of the frontier myth in American culture and the regularity with which its metaphorical entailments appear in the public address of scientists and politicians.Readers familiar with Ceccarelli's body of work will recognize that this is not her first foray into the territory of metaphor, science, and public discourse. For example, in ''Neither Confusing Cacophony nor Culinary Complements: A Case Study of Mixed Metaphors in Genomic Science, '' Ceccarelli (2004) examined how prominent scientists and political figures-for example, Francis Collins and Craig Venter, Bill Clinton and Tony Blair-deploy metaphors in speeches related to the Human Genome Project. Metaphors also inform Ceccarelli's (2001) analysis in her wellknown first book, Shaping Science With Rhetoric: The Case of Dobzhansky, Schro¨dinger, and Wilson. Each of these studies reference frontier-based rhetoric and the powerful role that metaphor plays in scientific discourse