URBAN-X Cohort 07 companies are working to reimagine infrastructure; for electric vehicle charging, for wastewater systems, for drone transportation, and for the cold chain that our 21st century food system relies on. They are taking new approaches to finance to make energy efficiency retrofits more ubiquitous for those with the greatest need. They are commercializing nanotechnology inspired by Butterfly wings to make the air we breathe cleaner. And they are using new tools to improve inefficient construction processes, reducing time, cost, and material for better buildings around the world.