Heavy snowfall from a second wave of a huge winter storm has hit the East coast of the United States, as hundreds of thousands of people remain without power.

The storm has been blamed for at least 22 deaths, including that of a pregnant woman struck by a snowplough. Her baby was delivered and was reported to be alive but in a critical condition.

About 550,000 homes and businesses are still in the dark, with some roads closed, trains delayed, and over 1,000 flights cancelled.

Already this month the cities of Washington DC, Detroit, Boston, Chicago and New York had recorded two to three times as much snow as normal by this time in the winter season, with up to 15in of snow dumped in the US capital, and 8in around New York City.

Written and presented by Alfred Joyner