As prescription drug costs skyrocket in the US, thousands of people are forced to forgo lifesaving medications -- all while manufacturers and health care facilities systematically destroy perfectly good, surplus pills. Kiah Williams shares how SIRUM -- a nonprofit that delivers unused medications to families who need them most -- plans to drive down prescription prices by recycling almost a billion dollars' worth of medications in the next five years. (This ambitious plan is a part of the Audacious Project, TED's initiative to inspire and fund global change.)