the Telegraph Another reason to take the train: Apparently planes cannot fly in volcanic ash. An eruption in Iceland is shutting down airports across the UK and spreading to the rest of Europe. The Telegraph, reports that the ash can shut down the engines and be sucked into the ventilation systems. According to one expert: "There is a risk of engine failure because of the ash. The problem with aircraft radar is that it is designed to pick up clouds of moisture and it won't detect ash. This is why you have t...Read the full story on TreeHugger