Our Changing World for Thursday 19 December 2019

9:06 PM.Damian Christie is in search of his origins - from the beginning of the universe, to human evolution & Polynesian settlement in the Pacific. Read more Audio

8:00 AM.Yttrium is yet another element named after the village of Ytterby and is important in the development of high temperature superconductors, says Allan Blackman from AUT in ep 94 of Elemental. Read more Audio

8:00 AM.Zinc is a very useful metal that turns up in everything from sunscreen to paint, & galvanised metals to cereals, as well as brass instruments, says Prof Allan Blackman in ep 95 of Elemental. Read more Audio

8:00 AM.Zirconium is a shape-shifting tough cookie, that is a tale of gemstones, medical implants and nuclear reactors, says Allan Blackman from AUT in ep 96 of Elemental. Read more Audio