Amelia Nierenberg reported from the eruption sites near Grindavik. Egill Bjarnason reported from Husavik, Iceland. As a swarm of earthquakes and volcanic eruptions began to rip through southwestern Iceland in late 2023, a firefighter named Helgi Hjorleifsson jumped into action.

Like much of Europe, Iceland witnessed its hottest year in 2025 - as heat-trapping gases continue to warm the planet. According to the Icelandic Met Office, the national average temperature last year was 5.