Forget AC, scientists create salt & water cooling system that works without electricity, keeps temperature near fridge levels for 15 hours

Salt and water AC: Saudi Arabian researchers have developed a novel cooling system, NESCOD, that utilizes ammonium nitrate's endothermic dissolution in water to achieve rapid temperature drops. This ...
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Scientists make electricity from falling rainwater in radical new energy experiment

Researchers from Singapore have developed a clever way to turn raindrops into electricity – enough to power 12 LEDs for 20 seconds using nothing more than a small vertical tube and some carefully ...