Solving climate change can involve either mitigation – reducing the greenhouse gases we're putting into the atmosphere – or adaptation – the process of adjusting to our changing environment. Solving climate change can involve either mitigation – reducing the greenhouse gases we're putting into the atmosphere – or adaptation – the process of adjusting to our changing environment. In the last episode of series two, we wanted to learn more about how these solutions are developing, what form they take, and where we should be applying them. We were particularly interested in the contrast between two climate change solutions: engineering approaches (such as technical methods of carbon capture, novel methods of building, or physical climate defences), and natural approaches (such as reforestation, changes in farming patterns, or restoring wetlands). With the stakes so high, how far can we harness nature to help tackle climate change, or will technology provide a solution? With Peter to discuss this are; Nathalie Seddon, who having trained as an evolutionary ecologist is now Professor of Biodiversity and Director of the Nature-based Solutions Initiative, Jim Hall, originally an engineer and now Professor of Climate and Environmental Risks, who is an expert on climate risks to infrastructure, and who for ten years sat on the UK independent Committee on Climate Change, and Dr Helen Gavin, Oxford Martin Fellow, an environmental scientist and sustainability professional bringing 18 years of experience in both industry and education.