Watch as Kathrine Frey Frøslie explains the epidemic r-number through crocheting, showing how fast Covid can spread through a population.

Kathrine Frey Frøslie works as associate professor in Biostatistics, and runs the popular science knitting blog Statistrikk.no. The crochet work is made for the exhibition CoviDesign at Greve museum in Denmark, 2020/2021.

[Statistrikk | Via BoingBoing]