* USPO creation over time: http://cartodb.github.com/torque/examples/uspo.html
* OpenStreetMap edits in Madrid over time: http://cartodb.github.com/torque/examples/osm.html
* The Guardian's Data Blog write-up of Royal Navy ships in WWI: http://www.guardian.co.uk/news/datablog/interactive/2012/oct/01/first-world-war-royal-navy-ships-mapped