This is a graphical presentation of diverse data. It is intended to help viewers grasp the relative magnitude of the issue under consideration. The diagram is not intended to be a ‘scientific’ comparison of related things but offers a set of diverse ‘million’ figures – the idea being that individual million figures are more or less meaningless to most people. By setting them out visually people can much more easily grasp their scale; by setting out figures for a diverse set of topics that also brings a sense of scale. It is not scientific as a method (although the individual figures are from good sources) but the approach often raises interesting questions – which can then be addressed more scientifically. We can produce Library Briefings (or InfoGraphics, or raw statistics) on questions provoked by the current diagram.