Author, The Guardian columnist and environmental activist, his best-selling books are Feral: Rewilding the land, sea and human life, Heat: how to stop the planet burning and Out of the Wreckage: New politics for an age of crisis.

He is co-author of the concept album Breaking the Spell of Loneliness with the musician Ewan McLennan. He has made several viral videos: How Wolves Change Rivers, adapted from his 2013 TED talk which has garnered over 40 million views on YouTube or Nature Now, co-presented with Greta Thunberg, viewed over 60 million times. The latest book, Regenesis: Feeding the World without Devouring the Planet, will be published in May 2022.