From chilling more of our food in a smarter way to taking governments to the courts, Tom Heap views the fundamental problem of our age from a fresh perspective. Small things that make a big difference. Big things that make a small difference. We’re going to need every one of them.

In the second week of programmes he meet the experts behind a selection of fascinating carbon-cutting ideas; preventing food waste with smarter chilling, squeezing more from the sun with next-gen solar panels, taking Siberia back to the Pleistocene era, fighting for the planet in the courts and the plants that can step up on photosynthesis.

Dr Tamsin Edwards, with help from the experts at the Royal Geographical Society, runs her slide-rule over the ideas to help Tom assess which are the biggest ideas with the most potential to push back on climate change.

Produced for BBC Audio in Bristol by : Alasdair Cross and Anne-Marie Bullock

Series made in partnership with the Royal Geographical Society Show less