Vendors sell fish at an open market on May 31st in Wuhan, China. Photograph: Getty Images

A Nobel prize-winning US biologist, who has been widely quoted describing a “smoking gun” to support the thesis that Covid-19 was genetically modified(...)

Researcher He Jiankui claims to have altered the DNA of the twins to try to make them resistant to infection with the Aids virus. Photograph: Anthony Kwan/Bloomberg

China’s government has ordered a halt to work by a medical team that claimed to have helped make the world’s first gene-edited babies. Vice-minister (...)