Why does the number e appear in models of exponential growth?

This year we lost our dear boss, friend and mentor, John D. Barrow. Here is what we wrote on the occasion of his death.

If they are, the Universe could be really different!

We celebrate Stephen Hawking with some fond memories of his colleagues.

A possible way of resolving the greatest problem of physics.

Explore the biggest problem in modern physics.

As we are well over half way through advent, we thought today we'd look towards the future of the Universe