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Latest episodes

Greenland's deep geological memory with Dr Julie Hollis

October 25, 2026 · 36 min

A few weeks before Holly set sail for Greenland with The Explorers Club and Adventure Canada’s 2026 Young Explorers Program, she and Anthony sat down with Dr Julie Hollis for a pre-expedition brief on everything Greenlandic geology! Julie…
What isotopes reveal about ancient cratons with Dr Eric Vandenberg

October 6, 2026 · 28 min

Where Anthony sees crystals and Holly sees a rock, Dr Eric Vandenberg sees atoms, and specifically, Eric counts the neutrons. Eric is a postdoc at the Adelaide University and part of the ARC Training Centre for Critical Resources for the…
Ancestry among the ashes: what volcanic records reveal about human evolution with Dr Hayden Dalton

September 29, 2026 · 29 min

Volcanologist Dr Hayden Dalton (University of Melbourne) joins Holly & Anthony with the science he's bringing to a fascinating human question: exactly how many hominin species were alive at the same time, in the same place, and were they…
Earthquakes, extinctions & deep microbiology: the discoveries made by scientific ocean drilling with Dr Ron Hackney

September 21, 2026 · 33 min

Pushing the frontiers of knowledge about our planet has never been so much fun! We've explored less of the ocean floor than we have the surface of Mars, so Dr Ron Hackney, director of ANZIC (the Australian New Zealand International…
The amazing chemistry of ocean sediments with Dr Stefan Loehr

September 15, 2026 · 38 min

We've directly observed less than 0.001% of the seafloor — so what's really going on down there? In this episode, Dr Stefan Löhr (ARC Future Fellow at the Adelaide University, and researcher with the Centre for Critical Resources for the…

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Exploring for critical chromium, from the ground up (to space!)

September 7, 2026 · 26 min

Critical Chromium: From Field Samples to Space Technology: How Do We Secure Supply? Exploring for critical chromium, from the ground up (to space!) Aerospace alloys, industrial protective coatings, stainless steel - chromium is literally…
Carbonatites: to REE or not to REE?

September 1, 2026 · 25 min

💎 Carbonatites: To REE or Not to REE? Earth's strangest magma is carbonate-rich, comes from the mantle, and there's only ONE erupting on the planet right now. It's called a carbonatite, a rare igneous rock that hosts the world's largest…
This critical metal is only found in mine waste? Dr Olivia Mejias Gonzalez on indium...

August 20, 2026 · 31 min

✨ The Weirdest Critical Metal You've Never Heard Of: Indium, Mine Waste & the Hunt for Hidden SuppliesYou've touched it hundreds of times. It's in your phone screen, your laptop, your solar panels, your TV. But unless you're a obsessed…
Looking for Lithium: from rocks in Rajasthan to laboratories in Western Australia

August 11, 2026 · 26 min

Electric vehicles are the future. But here's the problem: India's lithium demand is skyrocketing, but the local supply is nearly zero. Enter pegmatites: fancy, crystal-studded rocks hiding in the Rajasthan desert that might just hold the…
The Australia-India Partnership: CSIRO on Critical Minerals Exploration Across Continents

August 5, 2026 · 16 min

When you connect wirelessly to anything, you have CSIRO to thank - they are the ones who invented Wi-Fi. But beyond the banknotes and wireless tech, Australia's national science agency is working on something equally important: methods to…
Shared origins for the Yilgarn's precious metals?

July 28, 2026 · 29 min

Australia's largest platinum deposit was hiding 70km from Perth CBD, and nobody had thought to look. In 2020, Chalice Mining drilled the very first hole at a site on the western edge of the Yilgarn Craton, ancient geology everyone had…
Why the Earth's surface yo-yos: Dr Mark Hoggard on the flowing mantle

July 22, 2026 · 32 min

The Earth bobs up and down like a yo-yo over geological time, and it's drawn a treasure map of the world's metals... What if the ground beneath your feet has been silently rising and falling for millions of years, driven not by…