Engineers at MIT have created a groundbreaking solar-powered desalination system that converts seawater into clean drinking water without using any electricity. This ultra-efficient device relies solely on sunlight, offering a low-cost, sustainable solution for coastal communities, islands, and regions with limited freshwater access. • The system uses a passive, multi-stage design that heats seawater with sunlight and evaporates it layer by layer for maximum efficiency. • It produces more fresh