Why integrate science and poetry in higher education? The arts have long been deployed in service of STEM courses, but deeper and STEAMier integration offers richer benefits to the theory and practice of both science and poetry. Developing and teaching an integrated interdisciplinary course is challenging – but worth it. We draw on educational and social psychology to outline why: it fosters interdisciplinary and intercultural capacities, making our students more nimble and collaborative; it exposes students to beauty, awe, and dissonance, contributing to their cognitive development and mental wellbeing; and it emphasizes shared disciplinary practices of attention, reflection, and articulation, enhancing students' relationality to self, others, and nature. Not to mention, it's really fun. This talk presents a conceptual rationale and a practical toolkit for designing an integrative undergraduate science-poetry (or poetry-science) course, including examples of what it looks like in practice and reflections on the ways in which teaching it delighted, terrified, and changed us.