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

The proof, known to be so hard that a mathematician once offered 10 martinis to whoever could figure it out, uses number ...

Optical illusion puzzles have been there for centuries and these are fun challenges that are designed to play tricks on our eyes and brains. Optical illusions work on a simple principle where it ...

This is Year Three for Notre Dame basketball under head coach Micah Shrewsberry, which means it's time to start seeing where all of this is going to go.

An optical illusion is a visual phenomenon where our perception of thinking about an image differs from objective reality. This image is seen as a classic forest camouflage optical illusion. These ...

With Pennsylvania's 2025 fall turkey season opening Nov. 1, here's where and how to find a hen or gobbler for your Thanksgiving meal.

No one is more enthusiastic about a cicada, their physical feats or insects as a whole, than Nicole Parish. And that's in ...

Most new traders lose money, but following three simple rules, having a strategy, never averaging losers, and avoiding blind ...

Effective email marketing demands more than generic messages, as demonstrated by experts who consistently achieve higher ...

The Jacob K. Javits Federal Building is the epicenter of the Trump administration’s migration crackdown. Mass arrests of ...

It's one of medicine's biggest mysteries — why sometimes our immune system attacks our own bodies. Autoimmune diseases affect ...

The federal government shutdown canceled a second straight jobs report, but private data sources suggest the labor market has ...