Differential equations are fundamental tools in physics: they are used to describe phenomena ranging from fluid dynamics to general relativity. But when these equations become stiff (i.e. they involve ...

The Executive should attempt to resolve a row over Irish language signs at Belfast’s Grand Central Station and avoid being seen as a “laughing stock”, a High Court judge urged. Mr Justice McAlinden ...

It’s called mental inversion, and here’s how it works. Thinking forward is an automatic process. Cause, then effect. Input, then output. A to B. It feels logical—and normal to start with a conclusion, ...

It’s hard to believe it’s only been about nine months since the trade that rocked Dallas to its core. We’re not even a season removed from an NBA transaction that led to huge protests and a public ...