Game shows, flight and social media bots are among the problems solved in this issue's Dear Dirichlet agony aunt column

We review the seventh of this year’s nominees for the Book of the Year

Michael Wendl dissects some variants of the magic separation, a self-working card trick.

A biography of Sophie Bryant

Solve the puzzles that appeared in Issue 04.

What can a 100-year-old result in topology say about weather and computers?