CRISPR Has Many Promising Applications — but the Gene-Edited Twins Represent Something More Troubling

Editing human embryos makes far more permanent changes than tweaks to adult DNA

Popular Science
Dec 4, 2018 · 4 min read
A researcher observes a CRISPR/Cas9 process through a stereomicroscope at the Max-Delbrueck-Centre for Molecular Medicine. Photo: Gregor Fischer/DPA/Picture Alliance via Getty Images

By Kat Eschner

Last week Chinese researchers rocked the world with reports that twin babies whose genes the scientists’ edited prior to…

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