In Oregon’s Blue Mountains, patches of dying trees once looked like separate outbreaks, scattered across ridges and drainages as if disease had struck at random. Instead, scientists found something ...

Folding a flat piece of paper into a torus — a shape with a hole in the middle — demands origami skill. That’s something mathematician Richard Evan Schwartz lacks. Yet he answered a lingering ...

The closest the field has come to solving the planar unit distance problem, first proposed in the 1940s, was in 1984. Now, OpenAI claims an internal model has cracked the puzzle.