More from Chalkdust
Top ten: Mathematical norms
The undisputed chart of the best mathematical norms this season
A walk on the random side
Tanmay Kulkarni intentionally gets lost on the Tokyo subway
They might not be giants
Angela Brett might not be standing on their shoulders
Christmas lights, trees and maths
Why do Christmas lights get tangled? And what's the perfect way to decorate a Christmas tree? Find the answers here.
On the cover: Hydrogen orbitals
Find out more about the weird shapes on the cover of Issue 08
Power-up review
"Unlocking the hidden mathematics in video games"