Thermavault: Teen-Built Salt Refrigerator Revolutionizes Off-Grid Healthcare

Three Indian teens just revolutionized healthcare in remote areas with a fridge that runs on salt—no electricity needed! Dhruv Chaudhary, Mithran Ladhania, and Mridul Jain, students from Indore, India, won the 2025 Earth Prize and $12,500 for their invention, Thermavault. This isn’t just a science fair project—it’s a lifeline for villages struggling to transport vaccines and medicines […]