A new rose has blossomed in the garden of mathematics: a flowery Venn diagram for 11 sets of objects. Venn diagrams use overlapping circles to show all possible relationships between sets.

South Yorkshire's Supertram has come back under public control after 27 years of being run privately. The network operates on four routes covering 21 miles across Sheffield, with a tram-train ...

There will be bank holiday disruption to the Supertram network in Sheffield to allow for rail replacement work. The changes to services between Saturday and Monday are to allow the replacement of ...