Our Changing World

Despite giving its name to a whole group on the periodic table, chemists can't agree if lanthanum even belongs in that group, says Prof Allan Blackman from AUT in ep 42 of Elemental. Read more Audio

In real life krypton is a noble gas which is commonly used in neon signs and laser light shows, says Allan Blackman from AUT in ep 41 of Elemental. Read more Audio

Professor Rangi Mātāmua talks about the 120-year-old book which has preserved his ancestors' knowledge of Māori astronomy. Read more Audio

Iron is formed in stars, makes up most of the Earth's core & as a result enables life as we know it to exist, says Prof Allan Blackman from AUT, in ep 40 of Elemental. Read more Audio

The kākāpō health crisis is stable, with no further cases of aspergillosis diagnosed, and seven hand-reared chicks have been successfully released in the wild, in ep 21 of the Kākāpō Files. Read more Audio

Iridium is the second-densest element on the periodic table and the most erosion-resistant metal. A layer of iridium in rocks marks the demise of the dinosaurs, according to Allan Blackman from AUT… Read more Audio

NIWA scientists are putting freshwater fish such as inanga through swimming trials, to find out how they cope with water moving at different speeds. Read more Video, Audio

A lack of iodine causes goitre, and seafood and iodised salt are good sources of this important trace element, says Prof Allan Blackman from AUT, in ep 38 of Elemental. Read more Audio

Indium is a very soft metal, and as indium-tin-oxide it is an indispensable part of the swipeability of touchscreens, says Allan Blackman from AUT in ep 37 of Elemental. Read more Audio

A panel of five experts debate what it will take to turn the idea of a predator-free New Zealand by 2050 from a dream into a reality. Read more Audio