This is just bizarre – air travel (and other things) could be affected for weeks, or months:
Smoke and steam hangs over the volcano under the Eyjafjallajokull glacier in Iceland, Wednesday April 14, 2010, which has erupted for the second time in less than a month, melting ice, shooting smoke and steam into the air and forcing hundreds of people to flee rising floodwaters. Volcanic ash drifting across the Atlantic forced the cancellation of flights in Britain and disrupted air traffic across northern Europe, stranding thousands of passengers. Flights in and out of London Heathrow, Europe’s busiest airport, were halted, and the shutdowns and cancellations spread to France, Belgium, the Netherlands, Denmark, Ireland, Sweden, Finland and Switzerland. The volcano’s smoke and ash poses a threat to aircraft because it can affect visibility, and microscopic debris can get sucked into airplane engines and can cause them to shut down.