Chinese scientist He Jiankui speaks at the Second International Summit on Human Genome Editing in Hong Kong on November 28, 2018. - Organisers of a conference that has been upended by gene-edited baby revelations are holding their breath as to what He, the controversial scientist at the centre of the "breakthrough", will say when he takes the stage on November 28. (Photo by Anthony WALLACE / AFP) (Photo credit should read ANTHONY WALLACE/AFP via Getty Images)
