2025 6th International Conference on Building Science, Technology and Sustainability (ICBSTS 2025) will be held in Meijo University, Nagoya, Japan during September 3-5, 2025. Civilization faces a decisive moment; its legacy became its problem, carved by everyday life comforts. As a result, disruptive effects on all habitats, from air pollution to catastrophic natural disasters, with an impact on the comfort and safety of the whole. Building Science, Technology, and Sustainability represent one of the paths to reach a balanced answer to ensuring economic and prosperous development. We, researchers and scientists, have the social responsibility to work together and share results to provide, at least, guidelines to address local sustainability as a contribution to reach a bigger goal. All changes start with the first small step and the belief that we can improve by presenting and discussing knowledge with others.