Building a large ship requires a massive amount of engineering work. Even the smallest parts require lots of time and effort to design and build. Case in point: the ship's propeller. The prop has to ...

Watch a brilliant homemade twin-propeller boat come to life—built from simple materials, engineered for performance, and tested for real speed on water. No fancy parts, just smart hands and solid ...

This past spring we watched as Canadian inventor Catalin Alexandru Duru set the record for the longest hoverboard flight in the world. On his homemade propeller-powered creation, Duru flew a distance ...