Protein fix: Martin Krzywinski, a well known pi artist, here lets the first 768 decimal digits of pi behave like the string of amino acids in a protein. In other words, he arbitrarily lets the prime digits (2,3,5 and 7) be black dots. The remaining dots each are colour-coded. A computer algorithm then ‘folds’ the string in such a way to maximize the number of adjacent black dots. He said: “The colour scheme is inspired by the Bauhaus movement. By smoothly deforming the lattice that holds the path into a circle and adjusting the sizes of digit circles, we can get something that starts to look like a globe, with clusters of prime digits being the land and composite digits forming a broken shoreline.” He explains his method in fantastic detail on his website , but even if you don’t understand it entirely, it still looks cool.