Wall Street Journal: Unilever built the popularity of its Dove soaps and skin creams with ads encouraging self-esteem in women. In recent weeks, Greenpeace used parodies of those ads to accuse the company of destroying Indonesian rain forests for palm oil, a key ingredient. Thursday, the environmental-activist group claimed a high-profile victory when the consumer-products giant said it would buy palm oil only from suppliers who can demonstrate they haven’t cut down forests. The speed of the …