Another Icelandic eruption: Grimsvotn volcanoBarely a year after a similar eruption in Iceland forced the biggest closure of European airspace since World War II, the eruption of the Grimsvotn volcano, under the Vatnajokull glacier in southeast Iceland on May 21, 2011 has caused hundreds of travel delays. The ash cloud forced U.S. President Barack Obama to shorten a visit to Ireland and has raised some fears of a repeat of last year's huge t
