The Kakeya conjecture predicts how much room you need to point a line in every direction. In one number system after another — with one important exception — mathematicians have been proving it true.

The Riemann hypothesis is the most important open question in number theory—if not all of mathematics. It has occupied experts for more than 160 years. And the problem appeared both in mathematician ...

A new proof has debunked a conspiracy that mathematicians feared might haunt the number line. In doing so, it has given them another set of tools for understanding arithmetic’s fundamental building ...

(AP) — The Transportation Department is going to train 163 track inspectors to dramatically increase the number of people who know how to spot critical problems with railroad ... is primarily at ...

BOSTON – An MBTA engineer conducting a recent inspection identified a failure in a power cable that may have created some electrical arcing with a nearby train axle, the transportation authority said ...