[by Nina Rzechorzek (University of Edinburgh, UK)]{style=“font-family: "helvetica neue" , "arial" , "helvetica" , sans-serif;”} [Short-listed for Access to Understanding 2013]{style=“font-family: "helvetica neue" , "arial" , "helvetica" , sans-serif;”} []{style=“font-family: "helvetica neue" , "arial" , "helvetica" , sans-serif;”} [ [How do nerve cells die?]{style=“font-family: "helvetica neue" , "arial" , "helvetica" ,