"Snow and freezing temperatures grounded flights and disrupted road and rail links across northern Europe on Monday, stranding travelers and closing schools.
Only one of two runways at London Heathrow, the world's busiest international airport, was operating after a weekend snowstorm, forcing thousands to camp out in terminals. More than 1,000 flights at German airports in Frankfurt, Munich and Berlin were canceled, disrupting business and Christmas holiday plans.
Freezing temperatures were expected to continue in Britain and Scandinavia for much of this week. Most of the rest of Europe is forecast to warm up in coming days, although a drop back to sub-zero levels is likely next week. For some the snowfall was welcome. Children's sledges were sold out in Germany."