In 1977 John Ellis made a bet with a student named Melissa Franklin at a bar. “If you lose this game of darts,” Franklin said, “you have to use the word ‘penguin’ in your next paper.” Ellis took the ...

Illustration of a set of real zeros of a graph polynomial (middle) and two Feynman diagrams. Credit: Max Planck Institute for Mathematics in the Sciences How can the behavior of elementary particles ...