Graph colouring, the assignment of colours to the vertices of a graph so that no two adjacent vertices share the same colour, represents a canonical NP-hard combinatorial optimisation problem with ...

AGM briefly adjourned after protesters wearing T-shirts labelled ‘No more big oil’ burst into song The chair of NatWest was forced to defend the bank against accusations of “climate backtracking” at a ...

Indonesia's finance minister has suggested tolls could be levied on ships using the Strait of Malacca, in a similar move to Iran in the Strait of Hormuz, before walking back the idea. Australia has ...

JHU mathematician Emily Riehl explains how a surprising amount of math goes into determining who ends up in the U.S. House of ...