Using chemistry to uncover the past
Our Changing World - A podcast by RNZ - Wednesdays
![](https://is1-ssl.mzstatic.com/image/thumb/Podcasts221/v4/e3/6b/ef/e36befe1-040a-c98b-39d8-1947916718c9/mza_3878651311208050289.jpg/300x300bb-75.jpg)
Chemical isotope analysis is a powerful technique - Dr. Charlotte King explains to Claire how she uses it to reconstruct past lives of forgotten people from the Otago gold rush.