Firefighter on holiday in Bali saved woman's life after she fell into volcano crater.

Quake activity has returned to the Ring of Fire as scientists fear a "big one" is coming.

NZ scientists raise questions over US study linking 2007 eruption to tidal cycles.

Flying rocks from the eruption of Mount Kusatsu-Shirane killed a skier in Japan.

Scientists shed new light on powerful 2012 undersea eruption north of NZ.

A 3D perspective image of the caldera and summit of Havre Volcano, in the SW Pacific north of New Zealand that experienced a submarine eruption in 2012. / Supplied by Woods Hole Oceanographic Institution 2018

Dormant volcano wakes with first eruption in known history.

Poorly-understood threat posed by volcano-driven tsunamis focus of cutting-edge study.

COMMENT: Experts think Mount Agung is on the brink of a major eruption.

Thousands of travellers are already trapped but Indonesia warns worst is yet to come.

Travellers need to take insurance as soon as they book tickets say insurers.

The fiery, dramatic history of New Zealand's north has been retold by a veteran geologist.

Rutherford Medal-winner among 21 researchers honoured at awards event.

In the long term, ash ejected from Mount Agung can positively impact agriculture.

Only 70,000 people live in areas designated as dangerous now by the government.

Abandoned villages, filthy evacuation centres and a drastic shortage of one critical item.

Could a volcanic eruption in Bali mean a cooler spring and summer for New Zealand?

A NZDF Orion has spotted huge columns of smoke and ash billowing from a Vanuatu volcano.

More tremors have sparked fear Bali's rumbling Mount Agung could erupt at any moment.

Number of tremors at Bali's Mt Agung volcano has increased as thousands flee.

Rich resources of oil and gas could lie trapped inside volcanoes buried off our coasts.

Tremors and smoke from Bali's Mount Agung volcano indicates it could blow within 24 hours.

Scientists will model the risks of a future "super-eruption" in a new $8.2 million study.

The latest bout of unrest at Mt Ruapehu's crater lake has come to an end, scientists say.

Hidden beneath the frozen surface of Antarctica lie warm caves that could harbour life.

Nasa says Yellowstone super volcano is a greater threat to life on Earth than an asteroid

Calmer conditions on White Island has allowed scientists to explore newly-formed features.

COMMENT: Auckland's natural history could get in the way of museum WWI memorial.

As photographer set up his camera, a volcano erupted right in front of him

Auckland's volcanic past has been pieced back together, revealing explosive surprises.