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Scientists in Iceland have warned that the country's Bardarbunga volcano could be about to erupt, and it could pose a risk to the aviation industry.

The country's Met Office has raised the risk level to orange, the second-highest level.

In 2010, a series of eruptions from an Icelandic volcano created an ash cloud that caused serious disruption to flights.

5 live's Phil Williams spoke to Professor Dougal Jerram, a Volcanologist from the University of Oslo.

This clip is originally from the Phil Williams Show on 20th August 2014