Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. The writer is a contributing columnist, based in Chicago Last month, Tonika Lewis Johnson won a MacArthur ...

Mathematicians have not yet succeeded in finding a formula for the number of different ways a road map can be folded, given n creases in the paper. Some notion of the complexity of this question can ...

A common claim states that a sheet of paper cannot be folded in half more than seven times. But is this true? How many times can you fold a piece of paper? In 2002, Britney Gallivan, then a junior in ...