Brad Scott

The central North Island's sleeping giant Mt Ruapehu has been stirring in recent weeks and vulcanologists have just raised their alert level by a notch Audio

A new crater has been created on White Island after an eruption on Wednesday night. Audio

A geyser that's lain dormant for more than 35 years has burst into life in Rotorua, sending spumes of water four metres into the air. Audio

Carving artist Matahi Whakataka-Brightwell. Chris Jolly - tour operator and the founder of Chris Jolly Outdoors. Brad Scott - GNS Science vulcanologist. Audio

Two New Zealand scientists have arrived in Tonga to assess the Hunga Ha-apai volcano after eruptions disrupted flights and stranded hundreds of people. Audio

Two New Zealand scientists are trying to get to Tonga to help find out more about a volcano that is erupting - causing flights in and out of Tonga to be cancelled. Audio

After nearly 20 years of use the volcanic hazard alert system for New Zealand has been revised to make it simpler and more informative Audio

Brad Scott talks about why the Papakura Geyser is coming back to life after 34 years of dormancy Audio

After 34 years of dormancy the Papakura Geyser, one of the most significant geysers of the Te Whakarewarewa geothermal valley, is coming back to life. Lisa Thompson speaks to GNS Science about why… Audio

Scientists and iwi say the eruption of the Papakura geyser in Rotorua for the first time in 34-years means a review of the Whakarewarewa geothermal field is needed. Audio

Scientists flew over White Island earlier today taking samples to get a better idea of whether it might erupt. Audio

Scientists will fly over White Island today to get a clearer picture of what is happening inside the increasingly active volcano. Audio

Scientists say volcanic unrest at White Island is the most vigorous for years and there's a 50/50 chance the volcano could soon erupt. Audio

GNS Science Volcano Surveillance Co-ordinator, Brad Scott, confirms there's been little change to the mountain's status. Audio

Veronika Meduna introduces a report from Todd Niall who travelled to Raoul Island part of the Kermadec Islands located 1000 km to the north of New Zealand. While on the island, he talks to GNS Science… Audio

Lee Hazelwood is the Waikato Civil Defence Emergency Management Group controller; and Brad Scott, GNS volcanologist. Audio

Scientists are warning Mount Tongariro could erupt again at any time with no warning - even though the official threat warning's been lifted. Audio

Civil Defence says the volcanic activity could pose a threat to the Waikato, Hawkes Bay, Gisborne, Manawatu-Wanganui, Bay of Plenty and Taranaki regions. Audio

Scientists are warning visitors to White Island, off the eastern Bay of Plenty, to take extra care as the risk of an eruption increases. Audio

Small volcanic earthquakes are shaking Mount Tongariro and the alert levels have been raised. Audio