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Memory special: What happens to memories over time?

24 October 2018

Memories fade, but that's no accident. Forgetting is a useful trick of the mind, and even when memories are lost, they aren't always forgotten
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

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