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On a cold night in January, a Harvard University professor with a billowing white beard stood on stage in a theater in New York City, with an icon of the environmentalist movement beside him. Both men were staring down a problem. How could they convince their counterparts on the stage, along with the 300 people at Hunter College's Kaye Playhouse for a debate, that the world should bring back Velociraptors? Could they sway them to at least bring back an extinct pigeon? The theme song from the 1993 blockbuster "Jurassic Park" was playing in the background, chipping away at their argument before the debate even began. In the film, based on the 1990 Michael Crichton book, dinosaurs are brought back from extinction to fill a theme park. "That film took sides. The experiment blows up. People get hurt," moderator John Donvan told the crowd. "But not before actor Jeff Goldblum declares, 'Scientists were so preoccupied with whether or not they could that they didn't stop to think if they should.' And then, a dinosaur eats Jeff Goldblum."
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Actually, a dinosaur does not eat Goldblum's mathematician character, but chaos certainly reigns in the movie and its myriad sequels because of de-extinction. Those images are what George Church, of the billowing white beard, and Stewart Brand would need to overcome to win the debate. Church helped launch the Human Genome Project, and Brand is a founder and editor of the Whole Earth Catalog magazine. The Human Genome Project is a global, long-term research effort to identify and map the estimated 30,000 genes in human DNA. The official motion for the night, "Don't Bring Extinct Creatures Back to Life," was chosen by Intelligence Squared, a nonprofit that turns academic-level debates into popular live events and podcasts.
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Arguing for the motion were Lynn Rothschild, a scientist with NASA, and Ross MacPhee, a curator at the American Museum of Natural History in New York City. The two were also arguing against Church and Brand. Genetic Rescue Brand started by saying controversy around de-extinction is "made up." He wasn't saying they should resurrect meat-eating dinosaurs. Instead, he said, de-extinction could be achieved through hybrids, or animals created from living, endangered species and extinct ones, using CRISPR. The term is an acronym for a tool that has been likened to "playing God" because it allows scientists to remove and replace genes. Eventually, CRISPR could be used to boost agricultural production or to replace wildlife that's slowly disappearing. That is the goal of the Revive & Restore project, a California nonprofit co-founded by Brand that seeks to use new methods of "genetic rescue for endangered and extinct species." The group is working to reintroduce the extinct passenger pigeon into the wild. The process would remove genes from modern band-tailed pigeons and replace them with passenger-pigeon genes.
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Revive & Restore would like to do something similar with woolly mammoths, editing the extinct creature's genes into those of modern Asian elephants. In that case, the goal is to increase the population of endangered Asian elephants, which has declined because of a virus. "We're not just curing extinction," Brand told the audience. "The technology that de-extinction is leading the way in is now being used by us and by others to prevent extinction." In 2018, Brand and Church traveled to Siberia, where Russian scientists are attempting to re-create the grassland ecosystem where woolly mammoths once lived. As the number of mammoths declined, foliage took over grassland. To restore it, scientists have knocked down trees and shrubs and brought in plant eaters, including elk and moose, to graze and keep back the foliage. Church said mammoth-and-Asian-elephant hybrids could once again inhabit Russia. He also urged everyone to "loosen up" about the prospect of hybrids. There's a lot of hybridization that occurs in mammals, he said. "I am partially Neanderthal," he said, referring to estimates by scientists that about 20 percent of Neanderthal genes are in modern humans.
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Neanderthals are an extinct species of human. Jack Horner, a Montana State University scientist and adviser on the first "Jurassic Park" film, is also working on a hybrid called "chickenosaurus." No one mentioned this during the debate. A hybrid mammoth, roaming Russia today, raises all sorts of questions, Rothschild and MacPhee said. Would this hybrid be released into a world with no natural predators? How would a mammoth know how to be a mammoth without other mammoths around? "You've got all the problems of not having a mom" and not having other animals to learn from, Rothschild said. These animals "will be suffering for something that we could be solving a different way," she said. Ethics Concerns An audience member asked if someone wealthy could be moving forward with the technology, possibly for commercial purposes, while scientists were debating whether they should. Brand said there was nothing happening in the de-extinction world that had commercial purposes.
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MacPhee, in response, asked, "You don't think there's a future in having saber-toothed tigers that you can use for hunting purposes?" Rothschild took the argument further, wondering whether someone could attempt to de-extinct a Neanderthal for commerce or simply in the name of science. The idea, Rothschild said, was morally wrong. "We have enough trouble with humanity recognizing that we have roughly equal intellects across the races. And to purposefully re-create a species that we know is going to be inferior in some way is just asking for enormous trouble," she said. In the end, based on the votes tallied before and after the debate, more people came around to MacPhee and Rothschild's side than Church and Brand's. For once, the Jeff Goldblums won.
Where does it state that Restoration of large herbivores, such as woolly mammoths, can revive and maintain grassland ecosystems and combat desertification?