Detectives investigating a multiple stabbing on a train in Cambridgeshire have confirmed a 32-year-old man who was arrested is now being treated as the only suspect ...

Two decades ago, the mathematician Moon Duchin spent her summers teaching geometry at Mathcamp, a program for mathematically talented teens. Campers contemplated notions such as how to prove whether a ...

It's the sort of blend of big-picture strategy and moment-to-moment ... From the clips we've seen, the art is stunning, and ...