iggy pop is tonight s play list. announcer: from the global resources of abc news, with terry moran, martin bashir, and cynthia mcfadden in new york city, this is nightline, april 15th, 2010. good evening. we begin tonight with a major travel disruption. the worst since the aftermath of september 11th, 2001. but this time around, man is not to blame. no, this time, it is the work of mother nature. a volcano in iceland that has erupted, sending a cloud into the stratosphere. that s left the conditions above a huge section of europe too dangerous to fly through. as nick watt now reports, it remains unclear when the skies will once again be friendly. reporter: this spectacular eruption in remote iceland is sending clouds of ash up to seven miles into the atmosphere. and causing global aviation chaos. winds are pushing the cloud of ash southeast towards europe, where panicked officials are grounding planes and closing airports. it isn t safe. reporter: the norwegian