. >> marty cooper, the father of the cell phone, next on 60 minutes on cnbc. [ male announcer ] you are a business pro. monarch of marketing analysis. with the ability to improve roigh seo all by cob. and you...rent from national. because only national lets you choose any car in the aisle... and go. you can even take a full-size or above, and still pay the mid-size price. i'm going b-i-g. [ male announcer ] good choice business pro. good choice. go national. go like a pro. [ticking] >> there are seven billion people on the planet and nearly five billion cell phones, meaning most of the earth's population is connected for sound, for picture, and for heaven only knows what else. the cell phone has brought us a world without end of talking, tweeting, and texting. it's all a result of marty cooper's big idea, and he looks at it all with pride, some amusement, and dismay, and with good reason. he's the father of the cell phone. his work ushered in a technological and social revolution, which, as he explained to morley safer in may 2010, he believes is far from over. he made the first public cell phone call on the sidewalks of new york in 1973. >> this was a time when t