Sandy: Storm-hit New York declared major disaster area

US President Barack Obama has declared a "major disaster" in New York state after storm Sandy smashed into the US East Coast, causing flooding and cutting power to millions.

A record 4m (13ft) tidal surge sent seawater cascading into large parts of New York City's subway system.

Across the city, a power sub-station exploded, a hospital was evacuated and fire destroyed 50 homes.

At least 32 people are reported dead across several US states.

Laura Trevelyan reports.