The White House says Americans face an ‘active threat’ of email cyberattack from China. All countries must play their part in the vaccination fight to beat Covid, says Britain’s former chief medical officer Professor Dame Sally Davies. Research finds oxygen will disappear from Earth in a billion years, but it’s unlikely humans will be around. Step away from the keyboard - Twitter is testing the ‘undo’ option for sent tweets. Elon Musk loses $27 billion and top spot as the world’s richest person as technology shares plunge. The world’s oldest known wild bird hatches chick at the grand old age of 70. 

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