Each episode follows a trail of ideas that stretches beyond the object itself, uncovering far reaching economic powers that shape how we live.

Along the way, Ed meets fascinating characters, from brilliant inventors to Latin American revolutionaries. He dives into their personal stories and reveals how they’ve changed the course of industries and economies.

Because when you look closely enough, even the simplest things turn out to matter more than you think.

LEDs were supposed to be one of the great technological and environmental success stories: a revolutionary technology that uses a fraction of the energy of traditional light bulbs. But is that what they've become? Or are they just an example of humankind’s insatiable desire for stuff? After all - we’ve just started lighting up more of the world than ever before.

Ed’s journey takes us from a small chemical factory in rural Japan where inventor Shuji Nakamura spent years battling explosions in pursuit of the world's first blue LED, all the way to Victorian Britain and the economist William Stanley Jevons whose ideas still shape the way we think about energy and consumption today.

Along the way, Ed explores one of the biggest questions in economics and climate policy: The Jevons Paradox. When technology becomes more efficient, do we actually use less of it, or simply find new ways to consume more?

The Stuff Matters series producer is Jake Otajovic. The production team includes assistant producer Valeria Rocca, specialist producer Aoife Yourell, and video producer Charlie Bell. Our bonus episodes are produced by Soila Apparicio. The editor is Philly Beaumont, and the commissioning editor is Paul Stanworth. Sound design and mixing by Luke Hatten. Original music for the series composed by Klong and Ed Conway.

Why is electricity demand in the US surging again for the first time in over 20 years? And what happens when one of the most powerful new technologies ever created collides with humanity's seemingly endless appetite for more?

Featuring an extended conversation with Breakthrough Institute director Alex Trembath, Ed and Alex explore AI, energy demand and whether the lessons of LEDs can tell us anything about the distant future of humanity.

Hidden inside are tiny magnets made from rare earth elements: obscure minerals that help power everything from smartphones and wind turbines to fighter jets and electric cars. They're also at the centre of one of the biggest geopolitical struggles of our time.

In this episode, Ed Conway follows the story of rare earths from an obscure Swedish town and the Manhattan Project to modern China, where decades of industrial strategy have given Beijing extraordinary control over a resource the rest of the world depends on.

Along the way, he explores the strange economics of rare earth mining, the environmental costs hidden behind modern technology, and the growing fear that global supply chains can be turned into weapons.

The Stuff Matters series producer is Jake Otajovic. The production team includes assistant producer Valeria Rocca, specialist producer Aoife Yourell, and video producer Charlie Bell. Our bonus episodes are produced by Soila Apparicio. The editor is Philly Beaumont, and the commissioning editor is Paul Stanworth. Sound design and mixing by Luke Hatten. Original music for the series composed by Klong and Ed Conway.

They are essential for everything from our electric vehicles and wind turbines to smartphones and military technology. As demand surges, governments and corporations are pouring billions into setting up complex, new supply chains. But what’s the right approach to make that happen?

Ed is joined by critical minerals security expert Gracelin Baskaran from the Center for Strategic and International Studies to investigate.