This week, we’re going on a search for the theory of everything.

The two main theories of physics are at odds with one another. Einstein's general relativity explains gravity, but it contradicts quantum theory: how we understand matter, atoms and particles.

Theoretical physicist at Imperial College London Professor Fay Dowker has been working on a solution to this quantum gravity problem, and tells us why the theories are incompatible, and how she plans to bring them together.

If you have a burning science question you want an expert to answer, send them to us on twitter at @sciencefocus, and we may answer them in a future episode.

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