What do America’s leading organic supermarket chain, Brazil’s top maker of beauty products, and the world’s most recognizable athletic brand have in common? They’re proof that acting sustainably and topping a billion dollars in sales can go hand in hand.

In this excerpt, adapted from her new book, Green Giants: How Smart Companies Turn Sustainability into Billion-Dollar Businesses, E. Freya Williams looks at nine companies whose standalone businesses, product lines or business units know how to maximize profit and be a force for social good.