Our Changing World

After twenty years of puzzling, geologist Bruce Hayward reckons he has identified some mysterious patterns in a west Auckland roadside cutting as moa footprints. Read more Audio

Arlene McDowell is designing nanoparticles that will hold medication and deliver it exactly to its intended destination in the body. Read more Audio

Great Barrier Island has become the world's third International Dark Sky Sanctuary, in recognition of its outstanding star-filled night skies. Read more Video, Audio

NASA's SOFIA observatory is a 2.5m telescope mounted in the back of a plane. It observes the birth and death of stars and the supermassive black hole at the centre of our galaxy. Read more Audio

The arms race between the immune systems of bacteria and the viruses - bacteriophages - that attack them, was a feature of this year's Queenstown Research Week. Read more Audio

Kohurangi, or Kirk's tree daisy, is rare in the Wellington region, but botanists are taking on the challenge of bringing it back to the city. Read more Audio, Gallery

What is vitamin C and why do we need it? Which foods have the most vitamin C? Should we pop pills when we think we're getting a cold, or are we just producing expensive urine? And can vit C really… Read more Video, Audio

We go beyond gaming to explore how VR works, what it's being used for (from treating a fear of spiders, to training young doctors) and ask if it's yet making any compelling case to be in every home. Read more Audio, Gallery

Simon Morton and Alison Ballance present a three-part series exploring the science of sweat, virtual reality and Vitamin C. This week, the function of a much-maligned bodily fluid that plays a vital… Read more Audio, Gallery

Julia Rucklidge is investigating whether micronutrients can relieve stress and anxiety, help people quit smoking and treat ADHD. Read more Audio

Mysterious bubbles and warm water, known as Hope Springs, which appeared after the Kaikōura earthquake, appear to be coming from deep in the earth's crust. Read more Audio