# Marcus Woo

## Mathematicians Calculate How Randomness Creeps In

The goal of a 15 puzzle is to put numbered tiles in order. Now mathematicians have solved the opposite problem — how to scramble one.

## How the Neutrino’s Tiny Mass Could Help Solve Big Mysteries

The KATRIN experiment is closing in on the mass of the neutrino, which could point to new laws of particle physics and shape theories of cosmology.