Maddy Harland and Thomas Henfrey talk to Andy Fryers

Permaculture is an agricultural practice based on natural eco-systems and is the basis of a worldwide citizen-led movement in more than 100 countries. For decades, practitioners have devised creative responses to changes in local climatic conditions. In doing so, they have developed a collective knowledge and experience invaluable to global efforts to address climate change. Harland is the Editor of Permaculture Magazine, Henfrey is Research Fellow at the Centre for Ecology, Evolution and Environmental Change at Lisbon University. They talk to Hay Festival’s Sustainability Director.