Mercury travels across continents. Lead stays in the ground for centuries. Cadmium accumulates in soil for decades before it shows up in your food. In this episode, we trace three metals that helped build the modern world and what they left behind. From French farmland to Nigerian recycling yards to Indigenous fishing communities in the Amazon, the story of heavy metals is not about industrial accidents. It's about what happens when the cost of a decision never reaches the people who made it.

Beneath our feet lies one of the largest and least understood systems on Earth. Underground explores groundwater, contamination and the hidden risks that remain long after they disappear from view.

A $23 billion port deal has placed the Panama Canal at the centre of a global conversation about trade, infrastructure and influence. Why are China and the United States paying such close attention, and what does it reveal about the future of global trade?

What if Exodus is not about people leaving at all?

From Chernobyl and Fukushima to Kiribati, Louisiana and the Three Gorges Dam, millions of people have been displaced by disasters, climate pressures and development projects. These events are usually described through migration, relocation and displacement.

But what if Exodus begins long before people move?

What if Exodus starts when the land itself is transformed?

Is the battery the energy pill of the green transition?

Batteries promise cleaner transport, renewable energy storage and a more electrified future. But every battery begins long before it reaches a vehicle, a power grid or a home. This episode explores the hidden systems behind the battery revolution.

We often think pollution happens where pollution is produced. The reality is very different. In this episode, we follow the story of fallout, from acid rain and atmospheric mercury to PFAS contamination now detected in some of the most remote places on Earth. It is a story about how consequences travel through environmental, economic and social systems long after the original transaction has ended.

What if every economic transformation creates a place that carries the cost of everyone else’s progress? From Appalachia and the Niger Delta to the critical mineral regions powering the energy transition, this episode explores the geography of sacrifice zones , places where prosperity is built, but not always shared.

Ports used to move trade. Now they concentrate power. Singapore, Rotterdam, Jebel Ali are not just infrastructure, but systems where logistics, energy and capital converge. The real question is no longer how fast trade can grow. It’s how long that growth can be sustained before the cost of keeping the system running becomes the constraint.