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Navigating the ethics of ancient human DNA research

With the development of next-generation sequencing technology, there has been a dramatic proliferation of research on ancient genomes from ancestral humans, from very few published before 2009 to more than 1,000 by 2017. What have we learned from peeking into the genomes of ancestral humans? There’s a lot of different types of questions that we can address by looking at the DNA from human ancestors.