In Colombia, engineers have developed a lamp that runs on saltwater instead of electricity, offering a simple solution for off-grid coastal communities. The device uses a chemical reaction between saltwater and internal metal plates to generate small amounts of electrical energy. When seawater is poured into the lamp, it acts as an electrolyte, triggering a reaction that powers an LED light. The system doesn’t rely on fuel, wiring, or batteries in the traditional sense — just saline water and re