WARNINGS over Iceland's Bardarbunga volcano have been reduced after an eruption did not produce any ash.Lava was spewed 50 metres into the air on Sunday and the country's meteorological office raised the threat level to red.But after monitoring the material created by the fissure that sits three miles north of the vast Dyngjujoekull glacier the authority decided to reduce the flight warning back to orange later that day.An aviation exclusion zone imposed around the eruption area of up...
