As we collectively mark the loss of the longest-serving monarch in British history and all that she represented on a national scale, many people are feeling a much more personal impact. The Guardian’s science editor, Ian Sample, talks to Prof Michael Cholbi about what grief is, how losing a public figure can have such a profound impact on our lives,​​ and why there’s value in grieving. Help support our independent journalism at theguardian.com/sciencepod