Explore the intersection of hydrogeology and humanitarian efforts in this guest lecture by Luciano Marquetto from Universidade Federal de Santa Maria. Discover how the study of groundwater and subsurface water movement contributes to addressing global humanitarian challenges. Learn about the applications of hydrogeological knowledge in providing clean water access, managing water resources in crisis situations, and supporting sustainable development in vulnerable communities. Gain insights into the role of hydrogeologists in disaster response, refugee camp planning, and long-term water security initiatives. Understand the importance of integrating scientific expertise with humanitarian goals to create lasting positive impacts on people's lives and the environment.