Regenerative Farming is gaining traction around the world as a means of increasing biodiversity, improving soil quality, sequestering carbon, restoring watersheds and enhancing the ecosystems of farms. The shepherd James Rebanks, author of English Pastoral, is on a quest to find out if it is possible to adopt these methods on his farm in the Lake District. He meets leading proponents of these methods in the UK, US and Europe and discovers how mimicking natural herd movements, stopping ploughing and adding costly chemicals could make his farm economically sustainable.

This is becoming an urgent question as not only is the global population projected to rise to nearly 10 billion by 2050 but according to the UN's Food and Agriculture organisation within 60 years we may literally no longer have enough arable topsoil to feed ourselves. Meanwhile our reliance on meat products is being blamed for increasing CO2 and climate change.

But can James,and indeed other farmers, make the switch to these techniques when industrial farming has been the paradigm for so long? When so many people believe turning vegan and shifting to plant-based ecological farming is the way forward, should he continue breeding sheep and cows? And as companies like Nestle, Walmart, Unilever, McCain and Pepsi all pledge to invest in regenerative farming to reduce their greenhouse gas emissions, do the claims about carbon sequestration stand up? How can he use his farm to save the planet?