ESA proves feasibility of extracting air from simulated lunar regolith. This is a giant leap toward sustainable lunar settlements using ISRU. Here’s the bonus kicker: as a by product of the process, metal alloys are produced for other uses.
NASA announces partnerships with industry on technologies needed to settle space
Of particular interest is work with SpaceX to study on-orbit refueling and rocket plume interaction with lunar regolith: https://www.nasa.gov/press-release/nasa-announces-us-industry-partnerships-to-advance-moon-mars-technology
Lunar in situ resource utilization
Dennis Wingo summarizes the historical context and business case for ISRU to enable lunar settlements: https://denniswingo.wordpress.com/2019/07/25/chicken-egg-chicken-on-the-moon/
Solar additive manufacturing using lunar regolith
Researchers at the German Aerospace Center (DLR) and the European Space Agency have published a paper in in the November 2018 Acta Astronautica demonstrating the feasibility of using solar energy to sinter lunar regolith in additive manufacturing. The in-situ resource utilization technique can be used to automate building roads and shielding lunar habitats prior to arrival of astronauts. https://www.sciencedirect.com/science/article/pii/S0094576518303874