Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more . CNN  —  A research team in China got creative in its efforts to save a critically endangered species by turning to ancient poems. The scientists pored over more than 700 ancient Chinese poems from the Tang through the Qing dynasties that mention the Yangtze finless porpoise to find out where and when poets described seeing the animal because little is