Two mathematicians have proved that a straightforward question — how hard is it to untie a knot? — has a complicated answer.

An airplane, traveling with a constant engine speed, makes a large and perfect circle parallel to the ground. There is no ...

Have you checked to see if your iPhone is eligible for the new iOS 26 update? It became available earlier this week — here's how to install it if you haven't yet. The new OS was released on Monday, ...

Throughline is a time machine. Each episode, we travel beyond the headlines to answer the question, "How did we get here?" We use sound and stories to bring history to life and put you into the middle ...

The following article contains spoilers from an episode of Emmerdale that hasn’t aired on ITV1 yet, but can be viewed on ITVX. We revealed the news about Mack at the start of last month. A source told ...

Abstract: Synchronization and power-sharing control are essential for islanded parallel inverters. Traditionally, droop control and other grid-forming control are the typical methods with ...