Europe's deadly cold snap maintains grip
Northern Europe remains in the grip of heavy snow and freezing temperatures, with more cold weather forecast for the weekend.
Dozens of people are reported to have been killed by exposure to the cold or in weather-related accidents.
The snow continues to disrupt transport networks but many airports are resuming a more normal service.
Temperatures in Poland have fallen to as low as -33C (-27F) in the past few days.
Another 12 people froze to death across Poland on Thursday night, according to police, bringing the total killed there during this cold snap to 30.
Police say many of the victims were homeless people.
Eleven people were reported to have died in Russia over the past 24 hours, and three in France. Deaths were also reported in Germany and the Czech Republic.Siberian air
The snow and ice has meant widespread delays and cancellations to European flights in recent days, with the closure of a number of British airports.
London's Gatwick airport reopened on Friday morning for the first time in two days, but the authorities said it was likely to be some time before flight schedules returned to normal.
While a regular service appears to be resuming in many European airports, arrivals and departure boards are still showing delays and some cancellations.
Eurostar says it expects to operate a significantly reduced service until Sunday, but that no more tickets will be available until Monday.
WEATHER AND TRAVEL INFO
Cold air moving down from Siberia has contributed to the wintry conditions in northern Europe.
Temperatures are an average 5C-10C below average in some major cities.
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