The Fagradalsfjall volcano in Iceland began erupting again on Wednesday after eight months of slumber — so far without any adverse impacts on people or air traffic.

The eruption was expected. It’s in a seismically active (uninhabited) area, and came after several days of earthquake activity close to Earth’s surface. It’s hard to say how long it will continue, although an eruption in the same area last year lasted about six months.

Climate change is causing the widespread warming of our land, oceans and atmosphere. Apart from this, it also has the potential to increase volcanic activity, affect the size of eruptions, and alter the “cooling effect” that follows volcanic eruptions.

Any of these scenarios could have far-reaching consequences. Yet we don’t fully understand the impact a warming climate could have on volcanic activity.

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