Sinking Cities

Engineers and urban planners look at how New York, with 520 miles of shoreline and no coastal protection, might defend itself against rising seas and storms.

Tokyo looks for new ways to protect itself from threats like rising waters, typhoons, tsunamis, earthquakes and sinking neighbourhoods.

Looking at how London's Thames Barrier is no longer enough to keep the city safe from water, and investigating both low-tech fixes and more advanced solutions that may help the city.

As development increases, engineers and urban planners come up with ways to protect Miami from rising seas and violent storms, including hurricanes.