|(excuse to post hot Icelandic girl)|
Scientists in Iceland have evidence that says another very-large volcanic eruption isn't very far off. Increased Earthquake activity in the most active section of one of the most geologically active nations are pointing to a major volcanic event for the 2nd largest Icelandic volcano, named Bárdarbunga, very soon. The good news is that one can actually pronounce this volc's name without a degree in viking linguistics.
Considering what it did to disrupt air-travel in Europe initially, then North America then Worldwide, I'd say this will be another huge issue...
From the article:
The last recorded eruption of Bárdarbunga was in 1910, although volcanologists believe its last major eruption occurred in 1477 when it produced a large ash and pumice fallout. It also produced the largest known lava flow during the past 10,000 years on earth.
It is the second largest volcano on Iceland and is directly above the mantle plume of molten rock.
By comparison, Bárdarbunga dwarves the Eyjafjallajökull volcano, which shutdown most of Europe's airspace last year after its ash cloud drifted across the continent's skies.