Yvon Chouinard is an American rock climber, environmentalist, and founder of the outdoor clothing company Patagonia. Born on November 9, 1938, he is known for his innovative climbing techniques and commitment to environmental conservation. Chouinard's passion for nature led him to create a business model that prioritizes sustainability and ethical practices. In addition to his work with Patagonia, Chouinard has authored several books, including Let My People Go Surfing, which outlines his philosophy on business and environmental responsibility. He has been a prominent advocate for protecting natural landscapes and promoting responsible outdoor recreation.