Here’s a Clever Way to Uncover America’s Voting Deserts

Mathematicians are using topological abstractions to find places poorly served by polling stations.

What Lit the Lamps That Let Humanity Measure the Universe

Type Ia supernovas are astronomers’ best tools for measuring cosmic distances. In a first, researchers recreated…

The Enigma of Dragonfly 44, the Galaxy That’s Almost Invisible

A growing catalog of huge but dim “ultra-diffuse” galaxies is forcing astronomers to invent new theories…