Church, who arrived on Colbert’s stage via the show’s “science-mobile” (a golf cart driven by a man in a lab coat with an Einstein bobblehead on the dash), explained how CRISPR enabled scientists to edit DNA more precisely and easily than ever before. The technology has raised concerns about “designer babes” — a prospect scientists say won’t happen for years, if ever — but Colbert took the idea to a different, more comic-booky extreme.
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