Explosive volcanic eruptions are an unavoidable natural hazard: Volcanic ash, the ejected lethal mixture of crystals, lava, glass and older rocks, is the most far-reaching threat. In April 2010, the ash cloud from Eyjafjall volcano in Iceland, a comparatively small event, paralysed large parts of Europe for up to one week in a manner unique in history. The impact was dramatic: several million passengers were grounded due to closed air pace and decelerated or halted industrial production caused several billion Euros of estimated economic loss. This scenario was largely amplified by the quasi-Babylonian lack of understanding and interaction amongst volcanologists, meteorologists,atmospheric researchers, engineers, private sector and politics.This eruption was not a singular “accident”: Europe has active volcanoes and is surrounded by others and must be prepared for similar future events. This requires a comprehensive and supra-disciplinary approach to allow for an encompassing mechanistic and quantitative understanding of the physico-chemical processes during the lifecycle of volcanic ash: from formation in a volcano, through changes during the dispersal in the atmosphere to the impacts on life and society.VERTIGO will address this challenging issue with a unique and innovative portfolio of partners from academia, research institutes and the private sector from eight European countries. We will offer an unmatched platform for research and training for highly-skilled students with a background in geology/volcanology, petrology/chemistry, informatics, biology, toxicology, fluid dynamics and/or engineering. The research-through-training projects for 13 students accomplish the EUROPE2020 strategy for a modern system of education. They will be educated in scientific and transferable skills, spiced with experience in private sector applications, to qualify for career opportunities in academia, research institutes, civil protection and private sector.