The disease was a new obsession: a frustratingly simple mechanical game called the 15-puzzle. Still familiar today, it consists of a four-by-four grid in which you slide 15 numbered tiles around, ...

Magnets can attract or repel without even touching, but how does that happen? This video explains how magnetic fields work and why magnets are found in so many everyday objects. A simple and visual ...

It’s a match made in YouTube Science Heaven: In the latest episode of Minute Physics, Henry Reich teams up with the folks at Veritasium to address one of the Internet’s favorite scientific conundrums: ...

At the smallest scales of matter, nature behaves in ways that feel almost counterintuitive. Individual particles follow simple rules, but when they interact together, entirely new behaviors can emerge ...