Designer babies. Self-improving AI. Are we ready for either?
How do we know when the world has changed? On June 1, a team of scientists published a preprint scientific paper claiming they had edited human embryonic DNA with more precision than any previous attempt. As a technical achievement, the work is undoubtedly impressive, largely avoiding the errors that had accompanied earlier efforts to gene […]
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Future PerfectDesigner babies. Self-improving AI. Are we ready for either?Two new breakthroughs show how hard it is to know when the world has changed.by Bryan WalshJun 10, 2026, 12:30 PM UTCShareGiftGetty Images/Science Photo LibraBryan Walsh is a senior editorial director at Vox overseeing the Future Perfect and climate teams and writes the Good News newsletter. He worked at Time magazine for 15 years as a foreign correspondent in Asia, a climate writer, and an international editor, and he wrote a book on existential risk.How do we know when the world has changed?On June 1, a team of scientists published a preprint scientific paper claiming they had edited human embryonic DNA with more precision than any previous attempt.
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