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George Church

George Church: The maverick geneticist now wants to reverse ageing

22 August 2018

He stirred controversy with his plans to bring back the woolly mammoth. But first he's working on editing sperm – and trying out his ageing reversal techniques on dogs
Jennifer Doudna

Unicorns and designer babies: How CRISPR creator sees the future

28 February 2018

Jennifer Doudna's discovery of the CRISPR technique gives us unprecedented power over life itself. We can handle the challenge – despite Hollywood portrayals, she says

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