China built hundreds of AI data centers to catch the AI boom. Now many stand unused.Terra CO2, a Colorado startup, received investment from CEMEX Ventures to develop low carbon building materials.Lumber, a Californian startup, raised $15.5m in Series A funding for their workforce management solution for SMB construction contractors.Specter Automation, a German startup, raised €5m in Seed funding for their construction management solution based on 3D models.