The World Wildlife Fund is campaigning to transform traditional Chinese medicine, working to promote new green standards that would halt the use of endangered species. Although trade in tiger bones, rhinoceros horns, and bear bile is officially banned, the items are still highly sought after as ingredients in traditional treatments. Chinese medicine, which is quickly growing in popularity throughout the world, uses some 1,000 species of plants and animals, a large number of which face extinction. WWF held a forum in China last week to promote the use of substitute ingredients in place of endangered species parts.