Science and Technology Man Creates Refrigerator That Works Without Electricity, Preserves Food Through Natural Evaporation, and Costs the Equivalent of Just R$ 135 Valdemar Medeiros 08/12/2025 at 14:23
Science and Technology Young Innovators Create Salt-Powered Refrigerator Without Electricity and Install 200 Units in Hospitals After Winning Global Award Valdemar Medeiros 26/04/2025 at 13:41
