Fundamental physics says time is symmetric - so why does time move forwards for us in a block universe?

Is time real? Are we just puppets living out a future already written? Marina Cortês explains why she thinks time is fundamental and that we don't live in a block universe.

Marina Cortês is one of a growing number of physicists who believe time is fundamental. We ask her about the alternatives theories to the block universe, where time comes first.

It would be foolish to ignore evidence. Luckily Bayes' theorem shows us how to take it in into account.

Does reality arise from information? What does this even mean? Anton Zeilinger explains the impact of John Wheeler's radical idea.

Continued fractions reveal the good, the bad and the beautiful side of numbers.

Following on from our previous article about curvature of lines and surfaces, we now move up to curvature of their higher dimensional equivalent – manifolds.

The division of plant cells is governed by their shape – just one example of how maths may reveal the fundamental laws underlying biology.

Not just the ingredients for a fairy tale...

Folding a piece of paper in half might be easy, but what about into thirds, fifths, or thirteenths? Here is a simple and exact way for fold any fraction, all thanks to the maths of triangles.

Observers are, of course, vital in physics: we test our theories by comparing them to our observations. But in cosmology, as Jim Hartle explains, we could be one of many possible observers in the Universe and knowing which one we are is vital in testing our theories.