VOLCANO

Japan's KiKai Caldera was formed 7,300 years ago after a supereruption created a giant depression in the land.

Volcanologist Heather Handley says that while the region is known for being particularly active, authorities still need to keep a close eye on things.

Volcanic eruptions are notoriously difficult to predict, but new research could lead to more effective warnings which could save lives.

One man was killed and at least 11 people were injured when an avalanche, possibly triggered by the eruption of a nearby volcano, engulfed skiers.

Alert level raised to four on a scale of five, which means an explosive eruption is possible within hours or days.

A 59-year-old grandfather from Bolton was left in agony after contracting a rare disease on holiday that caused one his testicles to swell to 10-times its normal size and burst.

Hundreds of inhabitants of the island, which is on the northeast of Papua New Guinea, have been evacuated.

People living in the altiplano region of southern Bolivia between the 13th and 15th centuries developed a unique agricultural system.

The active stratovolcano which lies in the eastern Andes most recently started erupting in 2008 and has continued to do so till December 2017.

Scientists previously estimated that super-eruptions happen every 45,000-714,000 years but new estimates say they happen a lot more often.

Millions of tonnes of ash spewed into atmosphere can severely reduce Earth's temperatures.

Mount Agung has been hurling clouds of white and dark gray ash about 3,000 meters (9,800 feet) into the atmosphere since the weekend and lava is welling up in the crater.

Warming global temperatures are creating rapid ice-melt in volcanically active regions, such as Iceland.

The Spanish island of Tenerife has been rocked by 22 earthquakes over four days, sparking fears that volcano Mount Teide may be about to erupt.

Some volcanoes could provide the same amount of power as several million solar panels, or 500 wind turbines.

In 2006, large quantities of boiling mud began pouring out of vents in the ground at various sites across the Indonesian island of Java, causing thousands to flee.

It only takes a few decades for the supervolcano beneath Yellowstone National Park to fill with magma. When it erupts, it could cover much of the US in ash.

Vanuatu, home to about 260,000 people, is made up of about 65 islands on the geologically active Pacific Ring of Fire.

When the Mediterranean Sea dried up, there were three times more eruptions.

Campi Flegrei is a large area of volcanic activity close to Naples.

Mount Takahe in Antarctica is a massive 35 kilometres in diameter.