In Iceland, Grimsvötn volcano has started erupting. This is a video on it.
Moderate Iceland earthquake starts off the eruption of Grimsvotn volcano; updates here.
The European governments together with the airline industry and scientists have decided earlier this year that the closing of some air traffic space due to volcano eruptions (like the eruption of the Eyjafjallajökull volcano last year), will be treated totally different than in 2010. Closures of traffic space is still possible but it will be much more selective: here.
Why Was the 2004 Sumatra Earthquake So Deadly? Here.