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Biological researcher He Jiankui also revealed more details of the controversial experiment in which he edited genes in human embryos that led to the birth of twin girls, Lulu and Nana.

Biometric identification has been rising in popularity as an alternative to passwords and other forms of authentication, in everything from PC operating systems to airport security. Companies including Fujitsu and AEON Credit Service have also tested palm-scanning technologies for retail payment and checkout.

Billionaire Pony Ma Huateng has called for the Greater Bay Area of Guangdong, Hong Kong and Macao to be turned into China's Silicon Valley and a "mecca for talent".

Boeing's downbeat news comes as it struggles to get the MAX back in the air.

Birx added that 28 percent of tests for coronavirus in the region were coming up positive, while in the rest of the country, the rate is less than 8 percent.