Rutherford Appleton Laboratory astrophysicist Chris Davis joins us to shed light on the structure and workings of the sun and the newly-launched STEREO mission, Cambridge University engineer Jeffery Lewins talks nuclear, and Anna Nicolaou asks why do some people burn whilst others turn brown? On a practical level, in kitchen science, Derek and Dave lift the lid on how suncream works. Like this podcast? Please help us by supporting the Naked Scientists