Recent changes in UK science education mean that pupils should be taught about ethical implications of science as well as science concepts. Finding time to incorporate the associated discussion, inquiry and debate and to locate appropriate resources is challenging for teachers. This paper reports on the development and evaluation of an interactive web based resource designed to support the teaching of controversial and ethical issues within Physics. Using principles of Inquiry Based Science Teaching (IBST) that focus on authentic and problem based learning activities where there may not be a correct answer and which involve discursive argumentation with peers; the Physics Ethics Education project (PEEP) aims to: - raise science teachers’ confidence in dealing with ‘difficult’ topics; - facilitate students’ and teachers‘ discussions of these issues and - enhance students’ learning of the science topics involved. The website hosts up to date information on topics in Physics and the associated ethical issues, challenges to promote student thinking known as ‘thought experiments’, learning and teaching activities, lesson guidance and templates, links to other web sites (and guidelines for evaluating them for bias and accuracy), and online discussion boards to allow students to practice their arguments and test out their reasoning.