Marine scientists are debating whether 80-plus bottlenose dolphins found dead along the U.S. Gulf Coast since January were more likely to have died from last year's oil spill or a winter cold snap.Full story
Fresh snow forecasts threatened to prolong chaos caused by a cold snap that could also dent German growth, and airlines and rail networks struggled to restore normal services in parts of Europe on Wednesday. Full story
A cold snap sweeping across Britain left many commuters stuckl in gridlock and paralyzed much of the transport system. Thousands of people were stranded overnight at airports and in transit, and hundreds of schools are closed. ITN's Sally Biddulph reports.