A BBC Radio 4 Book of the Week. Spring is nature's season of rebirth and rejuvenation. Earth's northern hemisphere tilts towards the sun, winter yields to intensifying light and warmth, and a wild, elemental beauty transforms the Highland landscape and a repertoire of islands from Colonsay to Lindisfarne. Jim Crumley chronicles the wonder, tumult and spectacle of that transformation, but he shows too that it is no Wordsworthian idyll that unfolds. Climate chaos brings unwanted drama to the lives of badger and fox, seal and seabird and raptor, pine marten and sand martin. Jim lays bare the impact of global warming and urges us all towards a more daring conservation vision that embraces everything from the mountain treeline to a second spring for the wolf.