Imagine a circle with radius 1 cm rolling completely along the circumference of a circle with radius 4 cm. How many rotations did the smaller circle make? Be prepared for a surprise!

We might have found the Higgs boson, but the search for new physics at the LHC isn't over yet.

One thing that makes TV game shows fun to watch is that there's usually an element of luck involved. But how (un)lucky is (un)lucky? We look at the probabilities of two popular examples.

Why does time have a direction?

To create energy from information you would need to break the second law of thermodynamics — that's impossible in the real world, but could theories that do break it shed light on why nature is the way it is?

In the latest online poll of our Information about information project you told us that you'd like an answer to this question. We asked Seth Lloyd, an expert on information at the Massachusetts Institute of Technology, and here is an answer. We also bring you two related articles from FQXi who are our partners on this project. Happy reading!

Fields medallist Cédric Villani talks to us about our solar system, chaos, and what it's like being a mathematical superstar.

Like spirals and flowers? Then you'll love polar coordinates and the pretty pictures they allow you to draw!

By the 1970s physicists had successfully tamed three of the fundamental forces using a sophisticated construct called quantum field theory. The trouble was that the framework seemed to fall apart when you looked at very high or very low energy scales. So how could these be thought of as valid theories? It's a question physicists are still grappling with today.