Science and Technology Brazilian Etec students built an underwater drone with recycled plastic that dives, photographs riverbeds, and collects metallic waste with a magnetic claw. Valdemar Medeiros 05/05/2026 at 10:24
Science and Technology United States Launches Copperhead-M, First Torpedo In The World Fired By Underwater Drone Carla Teles 07/04/2025 at 13:34
