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VOICES OF PEOPLE Ellen Zimmer If you want to learn about bringing back extinct animals, reading John Smith's *Back from the Dead* is a good start. But I have to say I can't agree with everything he says. From his book, I can see Smith is an *advocate* of bringing extinct animals back. He says we have lost many animals because we made their living spaces too dirty. He also thinks we must do everything we can to bring them back. However, I don't know how much time and money we would need to make the world a better place for them, and honestly no one knows if they could actually come back. Smith also says that bringing back extinct animals may be good for us. He talks about an extinct frog that grew tadpoles in its stomach. Some women's babies die before they are born, and Smith believes bringing back the frog may be an answer to the problem. According to him, by studying how the tadpoles grow inside the frog's stomach, we might be able to find new ways to help these women successfully keep their babies. But I don't think things are as easy as Smith thinks. We have spent ten years and millions of dollars on this kind of frog, but all we have got are only a few dead frog eggs. If we can't see a real frog, how can we be sure women will get the help they need? Dr. Solomon Wang from the Animal Saving Office says the study of bringing back extinct animals is "throwing good money after bad." And he's right. A lot of hard work has been put into this expensive dream, but we haven't seen anything come out of it. So should we still keep going down this road? （加註：extinct 絕種的；tadpole 蝌蚪）