Leonardo da Vinci designed a weapon so dangerous, he intentionally sabotaged his own blueprints so no one could ever use it. In 1487—over 400 years before World War I—Da Vinci drafted the design for the world's first armored tank. Pitched to the Duke of Milan, it was an unstoppable, turtle-shaped wooden fortress bristling with a 360-degree ring of cannons, designed to absolutely decimate enemy lines while protecting the men powering it from the inside. But there is a mind-blowing secret hidden i

Rising Text Effect in DaVinci Resolve