The exploitation of the large portions of available spectrum in the sub-THz band (90-300GHz) is one of the most promising directions for enhancing the capacity of current wireless access networks. However, several formidable technological, societal, and business challenges need to be addresses, in particular related to the development of economically attractive and energy efficient solutions. A part from its obvious impact in terms of costs and range of use cases, energy efficiency is a crucial parameter in the context of the ambitious climate targets imposed, for instance, by the German and Brazilian governments. Addressing these challenges requires a complete rethinking of the entire value chain of communication systems, and hence a continuous interaction between academia, industry, government, and public interest organizations. Furthermore, possible synergies with new promising paradigms such as reflective intelligent surfaces (RISs) or integrated sensing and communication (ISAC) need to be explored. Following the above spirit, this panel will bring together experts from top Brazilian institutions, and prominent partners of the German 6G Research & Innovation Cluster (6G-RIC). The 6G-RIC is a research hub designed to provide scientific and technical foundations for the next generation of mobile communications, and it is financed by the Federal Ministry of Education and Research of Germany. It is based on the interdisciplinary and coordinated collaboration of a total of 32 research groups from 20 universities and research institutions, supported by more than 60 associated partners from science, industry, and governing bodies.