1. Major advances in the determination and interpretation of terrestrial heat flow; including vertical variation of heat flow, error determination and quality classes, the use of temperature data from resource exploration, identification of hydrothermal overprints, use of geoneutrino in heat-flow studies;
2. Use of thermal data for academic and industrial studies, including geodynamic modeling, lithosphere structure, global heat-flow budget, subglacial heat flow and the fate of large ice sheets, mineral exploration and geothermal energy;
3. Advances in laboratory measurements and in situ determination of rock thermal properties and heat production;
4. Advances and problems in global heat-flow data compilation, including data sharing and information systems/platforms.
Other contributions related to studies of terrestrial heat flow are also invited.