Iceland volcano eruption 'likely to be small'

Iceland's most active volcano, Grimsvotn, has started erupting.
Scientists say that this eruption is likely to be small and should not lead to the air travel chaos caused last year by the eruption of another Icelandic volcano, which led to cancellation of thousands of flights.
Glaciologist at the Icelandic Meteorological office in Reykjavik, Matthew Roberts, tells BBC News that the eruption "shouldn't have any far-reaching effects".