Do humans need the tonic of the wild to be happy? There is more and more evidence that we are dependent on nature’s goods and services, not just to stay alive physically, but mentally, emotionally and spiritually, too. In Losing Eden, the author and journalistexplains the latest research in human biology, neuroscience and psychology and discovers new ways of understanding our dysfunctional relationship with the Earth.

Andy Fryers is Hay Festival Sustainability Director.