World population - geo-informed circle packing

An attempt to mix a circle packing layout with a geographical map. Population data is represented by a bubble for each country, which is then colored, grouped and displaced onto the map according to the continent it belongs to (there are a few dubious attributions, you can read about them here).

This expands upon this world map and this bubble chart, using a technique shown here to manage collisions.

Data from Natural Earth & data.worldbank.org.