Bill Gates vows to drop off world rich list as he donates £17 billion to charity
The Microsoft co-founder has pledged to give away most of his money to charity.
Bill Gates
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Bill Gates warns of smallpox terror attacks in bid for pandemic prevention funds
The Microsoft founder called for the formation of a new billion-dollar World Health Organisation Pandemic Task Force.
'£400m each is it? Well hang on...': PM's confusion over Bill Gates investment
Boris Johnson said the government was matching a £200 million investment from Bill Gates, but Mr Gates said it was £400 million - so which is it?