Andrew Gorden

The mostly unfamiliar cities of China's vast inland territories are growing at an exponential rate, attracting global businesses, infrastructure investment, and residents in search of opportunities.

Experimental efforts are being made to harness the extreme currents off Maine's coast, as underwater tidal energy turbines could soon generate power for nearby homes and businesses.

From Buenos Aires, to Mexico City, to Bogota, cities across Latin America are embracing the bicycle. Across Central and South America, bike lane miles and the numbers of bicycles on the streets are on the rise.

Located adjacent to the nation's 3rd busiest train station, Philly's new multi-use plaza - dubbed The Porch - provides a welcoming entryway to the city and a model for a "lighter, quicker, cheaper" approach to urban improvements.

The futuristic sounding "Domain Awareness System," NYC's newest crime fighting tool, utilizes cutting edge technology to further cut down on crime in what has become "one of the safest big metropolitan areas in America."