When you pick up a packet of food in the supermarket, you can see the calories, protein and fibre listed clearly. But there’s one ingredient you’ll never find on the label, even though it’s essential to producing almost everything we eat: water.

And not just the water you can see in a juicy tomato or crisp lettuce, but the vast, hidden volumes used to grow crops, feed animals and process food.

Globally, agriculture accounts for around 72 per cent of annual freshwater consumption. Every burger, avocado and cup of coffee carries an invisible price tag measured in litres of water. Yet most of us rarely think about it. Should we?

In a special edition of our podcast, Ben Haines dives deep into these invisible waters...

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In March 2021, Seoul woke up under a thick yellow haze - the worst dust storm in a decade. South Korea blamed China, who promptly blamed Mongolia. Fingers were pointed, narratives emerged, and what seemed like a weather event quickly became a diplomatic one.

Since then, dust storms have continued to blight the region, and have emerged as a source of continual transborder tension.

Joining Esau in this episode, Dr Thomas White, co-author of the article Foul Weather Friends? The Transnational Politics of Dust Storms Between China and Mongolia, and Prof Andreas Baas, a physical geographer with expertise in desertification and land degradation.

Together, they unpack how dust storms stir up more than sand - touching on nationalism, environmental diplomacy, and the politics of green solutions - questions that resonate far beyond the Gobi Desert.

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A recent assessment found that the area of Earth's landmass that will be too hot for even healthy adults to keep a safe core body temperature will approximately triple - to an area almost the size of the US – if global warming reaches 2°C above the preindustrial average. We've already reached 1.5°C.

This week Esau asks: what does 'too hot' actually mean? What will happen to the people who live in these areas? And what might be done to help combat the impacts?

Joining him are Dr Tom Matthews, lead author of the study and Senior Lecturer in Environmental Geography, and Aditya Pillai, who is a doctoral researcher in King’s India Institute, a Visiting Fellow at the Sustainable Futures Collaborative, New Delhi, and author of a recent report investigating India’s readiness for the extreme heat of a much, much hotter world.

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