ISPRS Technical Commission III is dedicated to the technologies and applications of remote sensing. It is jointly hosted by Brazil and France from 2022 to 2026 and its mid-term symposium will be held in Belém, Brazil, on 4-8 November 2024, together with the Latin-American remote sensing symposium SELPER and several tutorials and thematic workshops, including South America Water from Space IV and Geo-Information for Disaster Management (Gi4DM). The symposium will cover a very wide range of topics related to remote sensing: from satellite image acquisition and processing techniques (space missions, sensors, algorithms, etc.), with sessions devoted to new missions (SWOT, Biomass etc.), to a wide variety of applications in Earth and planetary sciences, climate, environment, and society, with a particular focus on the Amazon and tropical environments.