Our Changing World for Thursday 25 February 2016

9:46 PM.Hangi or oven stones are a record of the earth's magnetic field at the time they were heated and cooled, and they show a remarkable history of New Zealand's magnetic field for the past 600 years. Read more Audio, Gallery

9:35 PM.Climate scientist Will Steffen, at the Australian National University, argues that to limit the impacts of climate change on island nations in the Pacific may require technology that takes carbon… Read more Audio

9:33 PM.The Chatham Island Taiko Trust has made flowerpot nests for 50 Chatham Island albatross chicks that are part of a pioneering translocation from The Pyramid to the main Chatham Island. Read more Audio, Gallery

9:30 PM.With just 120-or-so known adult birds, 21 new chicks are a very welcome addition to the Chatham Island taiko population. Read more Audio

9:25 PM.The endangered kakapo is in the middle of a bumper breeding year that looks set to be the best ever, and conservationists are looking foward to the resulting population boom. Read more Audio, Gallery

9:20 PM.An international team of scientists found that Antarctica's land-based ice sheets are more vulnerable to rising temperatures than they previously thought. Read more Audio

9:06 PM.Veronika Meduna joins a school group for a morning at MindLab, using fruit and vegetables to build musical instruments. Read more Audio