Five years after the worst natural disaster in the city's history, Josh Robin examines what the city has – and has not – done to protect New Yorkers for when the next Sandy-like storm strikes.

• PART 1 - THE FLOODS
• PART 2 - EMERGENCY
• PART 3 - BLOWN DEADLINES
• PART 4 - THE PRICE OF LIVING ON THE WATER
• PART 5 - THE NEW NETHERLANDS