I helped organize and carry out Earth USA 2019. This 10th International Conference on Architecture & Construction with Earthen Materials took place from Friday, October 25 to Sunday, October 27, 2019 at the Scottish Rite Center's Alhambra Theater in Santa Fe, New Mexico. More than 150 earthbuilding enthusiasts viewed 32 podium presentations, 20 poster presentations and 2 demonstration sessions. Prof. Ronald Rael (UC Berkeley Acting Chair of Architecture; Professor of Architecture, Eva Li Memorial Chair in Architecture) dazzled us all with his keynote presentation entitled "Mud Frontiers: Notes from the Borderlands". Full details about past, present and future conferences can be found at www.earthusa.org.