The story of how Yvon Chouinard, a reluctant billionaire who only wanted to climb and surf, harnessed his passions to create outdoor apparel brand Patagonia - before giving it all away to fight climate change. BBC business editor Simon Jack and journalist Zing Tsjeng discover how the self-proclaimed "existential dirtbag" went from jumping freight trains and eating cat food to leading the charge for businesses to commit to environmental causes.

Simon and Zing track the life of a man who claims that calling himself a businessman is as difficult for him as it for others to admit to being an alcoholic or a lawyer. Then they decide if they think Yvon Chouinard is good, bad, or just another billionaire.

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