TLDR: With a 4K camera, a host of handy flight features, and a small, but compact build, the Ninja Dragon Vortex 9 is a perfect drone for new fliers. It’s easy to just write off drones as classic big boy toys. That is…until they start saving lives. A team of researchers think it’s possible, presenting a study last month outlining how drones can be outfitted to fly over disaster areas and actually identify the screams of anyone trapped and bring help.    Whether you have lofty life-saving goals or just want to tear up the sky in a sick ride, you…

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