## Articles

**Professor Gerardus 't Hooft**has always been fascinated by the mathematical mysteries of nature. He tells

*Plus*about his early life, and what our Universe might really be like.

**Professor Kip Thorne**shows us how to eavesdrop on these cosmic events by watching for telltale gravitational waves.

**Colin Adams**asks when is a molecule knot a molecule? and what happens if you try to build a knot out of sticks?

**Rachel Thomas**looks at Shannon's life and works.

Cookies are set out on a rectangular grid. The bottom left cookie is poisoned.

Two players take it in turn to "chomp" - that is, to eat one of the remaining cookies, plus all the cookies above and to the right of that cookie.

**Matthew Keeling**describes some of the mathematical developments that have improved our understanding and predictive ability.