Paul Root Wolpe: It's time to question bio-engineering

【微信公众号：Raz英语学习俱乐部（微信号Razkids）同步推送每日TED文稿和音频，关注Raz分级读物、TED学习系列、海外自由行/夏令营】 Paul Root Wolpe examines the ethical implications of new science — genetic modification, neuroscience and other breakthroughs that stretch our current philosophy to the breaking point. He&`&s the chief bioethicist at NASA, among other appointments. *Why you should listen Paul Root Wolpe directs the Center for Ethics at Emory University, where he works on the biggest issues most of us face in our life-long ethical journey: death and dying, new reproductive technologies, and new medical and scientific breakthroughs that are not covered in our traditional ethics (what would the Bible say about growing a human ear on a mouse?). He&`&s also the chief bioethicist at NASA, where he advises on the medical experiments that happen during space travel. *Transcript Today I want to talk about design, but not design as we usually think about it. I want to talk about what is happening now in our scientific, biotechnological culture, where, for really the first time in history, we have the power to design bodies, to design animal bodies, to design human bodies. In the history of our planet, there have been three great waves of evolution. The first wave of evolution is what we think of as Darwinian evolution. So, as you all know, species lived in particular ecological niches and particular environments, and the pressures of those environments selected which changes, through random mutation in species, were going to be preserved. Then human beings stepped out of the Darwinian flow of evolutionary history and created the second great wave of evolution, which was we changed the environment in which we evolved. We altered our ecological niche by creating civilization. And that has been the second great -- couple 100,000 years, 150,000 years -- flow of our evolution. By changing our environment, we put new pressures on our bodies to evolve. Whether it was through settling down in agricultural communities, all the way through modern medicine, we have changed our own evolution. Now we&`&re entering a third great wave of evolutionary history, which has been called many things: "intentional evolution," "evolution by design" -- very different than intelligent design -- whereby we are actually now intentionally designing and altering the physiological forms that inhabit our planet. So I want to take you through a kind of whirlwind tour of that and then at the end talk a little bit about what some of the implications are for us and for our species, as well as our cultures, because of this change. Now we actually have been doing it for a long time. We started selectively breeding animals many, many thousands of years ago. And if you think of dogs for example, dogs are now intentionally-designed creatures. There isn&`&t a dog on this earth that&`&s a natural creature. Dogs are the result of selectively breeding traits that we like. But we had to do it the hard way in the old days by choosing offspring that looked a particular way and then breeding them. We don&`&t have to do it that way anymore.This is a beefalo. A beefalo is a buffalo-cattle hybrid. And they are now making them, and someday, perhaps pretty soon, you will have beefalo patties in your local supermarket. This is a geep, a goat-sheep hybrid. The scientists that made this cute little creature ended up slaughtering it and eating it afterwards. I think they said it tasted like chicken. This is a cama. A cama is a camel-llama hybrid, created to try to get the hardiness of a camel with some of the personality traits of a llama. And they are now using these in certain cultures. Then there&`&s the liger. This is the largest cat in the world -- the lion-tiger hybrid. It&`&s bigger than a tiger. And in the case of the liger, there actually have been one or two that have been seen in the wild. But these were created by scientists using both selective breeding and genetic technology. And then finally, everybody&`&s favorite, the zorse. None of this is Photoshopped. These are real creatures. And so one of the things we&`&ve been doing is using genetic enhancement, or genetic manipulation, of normal selective breeding pushed a little bit through genetics. And if that were all this was about, then it would be an interesting thing. But something much, much more powerful is happening now. These are normal mammalian cells genetically engineered with a bioluminescent gene taken out of deep-sea jellyfish. We all know that some deep-sea creatures glow. Well, they&`&ve now taken that gene, that bioluminescent gene, and put it into mammal cells. These are normal cells. And what you see here is these cells glowing in the dark under certain wavelengths of light. Once they could do that with cells, they could do it with organisms. So they did it with mouse pups, kittens. And by the way, the reason the kittens here are orange and these are green is because that&`&s a bioluminescent gene from coral, while this is from jellyfish. They did it with pigs. They did it with puppies. And, in fact, they did it with monkeys. And if you can do it with monkeys -- though the great leap in trying to genetically manipulate is actually between monkeys and apes -- if they can do it in monkeys, they can probably figure out how to do it in apes, which means they can do it in human beings. In other words, it is theoretically possible that before too long we will be biotechnologically capable of creating human beings that glow in the dark. Be easier to find us at night. And in fact, right now in many states, you can go out and you can buy bioluminescent pets. These are zebra fish. They&`&re normally black and silver. These are zebra fish that have been genetically engineered to be yellow, green, red, and they are actually available now in certain states. Other states have banned them. Nobody knows what to do with these kinds of creatures. There is no area of the government -- not the EPA or the FDA -- that controls genetically-engineered pets. And so some states have decided to allow them, some states have decided to ban them.Some of you may have read about the FDA&`&s consideration right now of genetically-engineered salmon. The salmon on top is a genetically engineered Chinook salmon, using a gene from these salmon and from one other fish that we eat, to make it grow much faster using a lot less feed. And right now the FDA is trying to make a final decision on whether, pretty soon, you could be eating this fish -- it&`&ll be sold in the stores. And before you get too worried about it, here in the United States, the majority of food you buy in the supermarket already has genetically-modified components to it. So even as we worry about it, we have allowed it to go on in this country -- much different in Europe -- without any regulation, and even without any identification on the package. These are all the first cloned animals of their type. So in the lower right here, you have Dolly, the first cloned sheep -- now happily stuffed in a museum in Edinburgh; Ralph the rat, the first cloned rat; CC the cat, for cloned cat; Snuppy, the first cloned dog -- Snuppy for Seoul National University puppy -- created in South Korea by the very same man that some of you may remember had to end up resigning in disgrace because he claimed he had cloned a human embryo, which he had not. He actually was the first person to clone a dog, which is a very difficult thing to do, because dog genomes are very plastic. This is Prometea, the first cloned horse. It&`&s a Haflinger horse cloned in Italy, a real "gold ring" of cloning, because there are many horses that win important races who are geldings. In other words, the equipment to put them out to stud has been removed. But if you can clone that horse, you can have both the advantage of having a gelding run in the race and his identical genetic duplicate can then be put out to stud. These were the first cloned calves, the first cloned grey wolves, and then, finally, the first cloned piglets: Alexis, Chista, Carrel, Janie and Dotcom. In addition, we&`&ve started to use cloning technology to try to save endangered species. This is the use of animals now to create drugs and other things in their bodies that we want to create. So with antithrombin in that goat -- that goat has been genetically modified so that the molecules of its milk actually include the molecule of antithrombin that GTC Genetics wants to create. And then in addition, transgenic pigs, knockout pigs, from the National Institute of Animal Science in South Korea, are pigs that they are going to use, in fact, to try to create all kinds of drugs and other industrial types of chemicals that they want the blood and the milk of these animals to produce for them, instead of producing them in an industrial way.These are two creatures that were created in order to save endangered species. The guar is an endangered Southeast Asian ungulate. A somatic cell, a body cell, was taken from its body, gestated in the ovum of a cow, and then that cow gave birth to a guar. Same thing happened with the mouflon, where it&`&s an endangered species of sheep. It was gestated in a regular sheep body, which actually raises an interesting biological problem. We have two kinds of DNA in our bodies. We have our nucleic DNA that everybody thinks of as our DNA, but we also have DNA in our mitochondria, which are the energy packets of the cell. That DNA is passed down through our mothers. So really, what you end up having here is not a guar and not a mouflon, but a guar with cow mitochondria, and therefore cow mitochondrial DNA, and a mouflon with another species of sheep&`&s mitochondrial DNA. These are really hybrids, not pure animals. And it raises the question of how we&`&re going to define animal species in the age of biotechnology -- a question that we&`&re not really sure yet how to solve. This lovely creature is an Asian cockroach. And what they&`&ve done here is they&`&ve put electrodes in its ganglia and its brain and then a transmitter on top, and it&`&s on a big computer tracking ball. And now, using a joystick, they can send this creature around the lab and control whether it goes left or right, forwards or backwards. They&`&ve created a kind of insect bot, or bugbot. It gets worse than that -- or perhaps better than that. This actually is one of DARPA&`&s very important -- DARPA is the Defense Research Agency -- one of their projects. These goliath beetles are wired in their wings. They have a computer chip strapped to their backs, and they can fly these creatures around the lab. They can make them go left, right. They can make them take off. They can&`&t actually make them land. They put them about one inch above the ground, and then they shut everything off and they go pfft. But it&`&s the closest they can get to a landing. And in fact, this technology has gotten so developed that this creature -- this is a moth -- this is the moth in its pupa stage, and that&`&s when they put the wires in and they put in the computer technology, so that when the moth actually emerges as a moth, it is already prewired. The wires are already in its body, and they can just hook it up to their technology, and now they&`&ve got these bugbots that they can send out for surveillance. They can put little cameras on them and perhaps someday deliver other kinds of ordinance to warzones. More transcript please see: http://www.ted.com/talks/paul_root_wolpe_it_s_time_to_question_bio_engineering/transcript?language=en#t-0