CNN Your Money March 24, 2013 19:43:00
Over the long-term, better roads, railways, ports, electrical grids, broadband. they invite businesses to operate more efficiently. they save them money, they create jobs. if you're a regular viewer of this show, you probably saw me go underground in new york city last summer to get a closeup look at one of the biggest public works projects in american history. i'm talking about manhattan's second avenue subway line. completing it will cost around $22 billion or $24 billion. what's behind the mammoth tab? here's what i found out when i traveled ten stories underground. >> backhoe excavators th...