Read the Nature paper for yourself: "Scutoids are a geometrical solution to three-dimensional packing of epithelia" https://www.nature.com/articles/s41467-018-05376-1 Thanks to Laura and Clara for helping me with the video! You can download Laura's model for free or order a print from Shapeways: https://www.thingiverse.com/thing:3024272 https://www.shapeways.com/product/L4D27PP24/pair-of-packable-scutoids Laura Taalman, James Madison University https://www.jmu.edu/mathstat/people/faculty-full-time/Taalman-Laura.shtml Clara Grima, University of Seville http://personal.us.es/grima/ These are the shows I was doing in Sydney: https://www.mansw.nsw.edu.au/student-activities/mathsinspiration But you can check out the Maths Inspirations shows in the UK: http://mathsinspiration.com/ And we'll be in New York on 2 October 2018: https://momath.org/upcoming-events/maths-on-stage/ Images of cells and stuccoed are all from "Scutoids are a geometrical solution to three-dimensional packing of epithelia". Voronoi demonstration is from here: https://en.wikipedia.org/wiki/Voronoi_diagram#/media/File:Voronoi_growth_euclidean.gif Thanks to my Patreon supports who do support these videos and make them possible. Here is a random subset: Malcolm Rowe Rhys Johnson Brian Lynch Jade Bilkey John Lewis Support my channel and I can make more videos: https://www.patreon.com/standupmaths CORRECTIONS - Yes, I pronounce it SCOO-toid, SCOW-toid, SCOE-toid etc. Sorry. It's new! I actually think ES-COE-TOID is the most correct. - Alex Sweeney noticed that when I describe a prism I say it has rectangle faced sides. But that is only true of right prisms, in general a prism has side faces which are parallelograms. When I later talk about prismatoids I realised I had to be more general and said the sides are faces with three or four edges. But I should have done that earlier. - Let me know if you spot anything! This video is not sponsored by Little Creatures Pale Ale or BBQ Shapes but I am totally open to suggestions. Music by Howard Carter Filming and editing by Matt Parker Design by Simon Wright MATT PARKER: Stand-up Mathematician Website: http://standupmaths.com/ Maths book: http://makeanddo4D.com/ Nerdy maths toys: http://mathsgear.co.uk/