HealthBaboons live for months after getting genetically modified pig hearts Genetically modified pig hearts have kept baboons alive for more than 90 days, a threshold that may now allow trials of this type of transplantation in people News
LifeGeorge Church: The maverick geneticist now wants to reverse ageing 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 Features