Cauldrons forming near Iceland's Bardarbunga volcano suggest an eruption under the ice has already taken place.
All of Iceland's airports remain open, though the airspace over the eruption site is closed.
Iceland has warned that its largest volcano is in danger of erupting, four years after millions of air travelers were grounded by a huge ash cloud from another peak.
Earthquakes under Iceland's Bardarbunga volcano prompted the Met Office to raise the volcano's eruption risk level to orange.
A complex interaction between lava and water, rather than a battle between mythical trolls, is responsible for unusual basalt pillars in Iceland.
Campaign has made international news because some of protesters claim the proposed road would disturb the habitat of elves who live among the rocks.
A new threshold for flying around volcanic ash plumes will lead to less delays and cancellations during the current Icelandic eruption.
The first deep-sea current measurements of the North Icelandic Jet provide evidence of its existence and may have a profound impact on ocean circulation models.
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