Some 500,000 people live in Campi Flegrei's "red zone." Researchers say the government's emergency plan should acknowledge the possibility of tsunamis if an eruption occurs.
The volcano famously experienced the largest caldera-forming eruption Europe has seen in the past 200,000 years.
The earthquake swarm at the western part of the national park lasted for three and a half months.
Scientists analyzing volcanic samples in Italy find similar conditions preceded eruptions over the last 60,000 years.
Climate change is causing wildfires in Yellowstone National Park to get bigger and burn for longer, a report has warned.
Scientists think they've found the magma behind the volcano's incredible eruptions.
"Man, the changes would be so much bigger than anything we've ever seen."
The global events happen way more often than scientists thought.
Research indicates a huge upwelling of hot rock lies beneath the ice of Antarctica's Marie Byrd Land.
The magma under a long-ago supervolcano never heated up as thoroughly as scientists had assumed.
The event began in June, and since then almost 2,500 tremors have been noted.
Source of magma has been discovered beneath the city of Pozzuoli.
If the ongoing earthquake swarm continues, it could become the longest ever recorded.
Scientists find supervolcanoes potentially host huge reservoirs of lithium in their ancient deposits.
The map shows changes in the elevation around the caldera between 2015 and 2017.
Fossil evidence forces major rethink of how and when humans arrived in Southeast Asia.
The earthquake swarm began six weeks ago and is ongoing.
The eruption risk at Yellowstone remains low, but one of the recent earthquakes was the biggest to have hit since 2014.
Italy's supervolcano appears to have been building energy over the last 60 years—and it could be ready to erupt.