The Plimp is a plane-blimp mashup that promises safe air transport

In 1908, five years after the Wright Brothers first flight at Kitty Hawk, U.S. Army Lieutenant Thomas Etholen Selfridge earned the dubious distinction as the first person to die in an airplane crash. In fact, the early years of aviation are littered with bodies. Last week, a pair of brothers in Washington state debuted an aircraft they see as the answer to the long-sought dream of perfectly safe flight. With a rigid, winged body held underneath a massive helium-containing envelope, their craft i