Spencer, who is retiring after nearly 40 years at Microsoft, will be replaced by Asha Sharma - an executive who previously oversaw some of the firm's AI initiatives.
The deliberately provocative national advertising campaign calls for all social media to be banned for children under the age of 16. The images on billboards and social media make a number of stark statements related to health.
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Several councils are taking a phased approach that will delay the date when the service will be in place for all homes.
Мерц резко сменил риторику во время встречи в Китае09:25
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