<p>This graph shows the flow of embedded carbon emissions between Australian and Chinese cities. Despite the large number of cities, and a web of lines, this graph is remarkably clear, likely due to the way the cities are ordered. In this case it is also likely a good choice not to use color. <br></p><p>From the paper: </p><p>Inter-regional, per-capita flows of embodied carbon emissions instigated by city final demand, (the largest bilateral flows are labelled).<br></p>