In 2018, Brand and Church traveled to Siberia, where Russian scientists are trying to recreate the grassland ecosystem where woolly mammoths once lived. As mammoth numbers dwindled, the pastures were taken over by foliage.
Church said mammoth-Asian elephant hybrids could once again inhabit Russia. He also urged everyone to "relax" about the prospects of hybrids. According to him, a lot of hybridization occurs in mammals. "I'm part Neanderthal," he said, referring to scientists' estimates that about 20 percent of Neanderthal genes are present in modern humans.
Rothschild and McPhee said. Will this hybrid be released into a world without natural predators? How does a mammoth know how to be a mammoth if there are no other mammoths around? “You have all the problems of not having a mom” and not having other animals to learn from, Rothschild said. These animals "will suffer because of something we could have handled differently," she said.
Rothschild went further, wondering whether someone might try to resurrect a Neanderthal for the sake of commerce or simply in the name of science. This idea, according to Rothschild, was morally wrong.
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