Science and Technology At 17, Student Creates Solar-Powered Water Purifier That Eliminates Bacteria, Wins International Awards, and Proposes Real Solution to Global Water Crisis Valdemar Medeiros 10/02/2026 at 20:18
Science and Technology South Korean Company Creates Portable Filter That Turns Any Faucet Into Drinking Water Purifier — No Electricity and Quick Replacement Valdemar Medeiros 23/06/2025 at 13:18
Portuguese 
English 
Spanish 
