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How many holes are there in a drinking straw?

Tim Harford talks to Jordan Ellenberg, professor of mathematics at the University of Wisconsin at Madison, about the pandemic, geometry and drinking straws.

(multi-coloured straws/Getty images)

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9 minutes

Last on

Mon 20 Sep 202109:50GMT
BBC World Service

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  • Sun 19 Sep 202113:50GMT
    BBC World Service
  • Sun 19 Sep 202121:50GMT
    BBC World Service except East Asia & South Asia
  • Mon 20 Sep 202102:50GMT
    BBC World Service South Asia & East Asia only
  • Mon 20 Sep 202109:50GMT
    BBC World Service

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