A listener sent me this clip and I was immediately fascinated.  Why?  First, because it is cleverly done.  It's punchy and edgy but does not cross the line. 

Second, it is an amazing idea and I mean amazing.  The couple behind this invention will be the wealthiest people on earth if this gets picked up (and there are plenty of interests that could squash it). 

Just check it out and look at the story later.