'Never has there been a greater need for writers who can communicate about the environment in such clear, immediate and powerful ways, who can envisage the past as well as the future. The knowledge is already out there. We just have to listen. The contributors to this issue all have a deep understanding of how nature works. Some are scientists; others, environmental journalists exploring the latest thinking about ecosystems and how to repair them; or poets, novelists and activists examining our responses to the current crisis. These stories will, I hope, be both enlightening and empowering, galvanising us to bring about change.'Isabella Tree, guest-editorPatrick BarkhamTim FlanneryCal FlynJessie GreengrassCaoilinn HughesAmy LeachDino J. MartinsRod MasonCharles MassyRebecca PriestleyCallum RobertsJudith D. SchwartzSamanth SubramanianKen ThompsonManari UshiguaSheila Watt-CloutierAdam WeymouthPhotography: Xavi Bou, introduced by Tim Dee, and Merlin SheldrakePoetry: Nate Duke and John Kinsella