➀ MIT engineers developed a window-sized hydrogel-based device that extracts water vapor from air, even in arid environments like Death Valley, producing up to 160ml of drinking water daily;

➁ The passive system uses a salt-stabilized hydrogel and cooling-coated glass to condense vapor without external power, addressing salt leakage issues seen in prior designs;

➂ Scalable vertical panels could provide household water access in resource-limited regions, with plans for further testing and optimization.