Science and technology have the potential to profoundly transform societies. Employed within a logic of innovation, they disrupt the reference points and values needed to judge and act. This raises several ethical risks, notably the inability to know clearly whether a specific process or technical invention will raise moral issues. Because of their involvement in the design of new technologies, engineers of all specialties are the first to be exposed to this disturbing and unpleasant situation. It therefore seems essential to develop ethics training programs for this specific audience. The Prometheus Challenge is one such proposal. Inspired by the methods of active and creative pedagogy, this two-days training aims to develop awareness of ethical issues, reflexivity, and autonomy in judgment. It also fosters the ability to formulate appropriate ethical assessments of science and technology problems through collective debate. It has already been tested with four groups of students from several engineering schools in Grenoble (October 2022 and February 2024).