All the coronaviruses in the world would fit in a coke can

A mathematician in the UK calculates that if you somehow gathered all of the Covid-causing coronaviruses in the world, there'd not be enough of them to fill a coke can.

Bath University maths expert Kit Yates worked out there are around two quintillion – or two billion billion – SARS-CoV-2 virus particles in the world at any one time.

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