* Open Source to validate 3D geometries http://geovalidation.bk.tudelft.nl/val3dity/
* How country boundaries are depending on the visitor IP via @bolosig http://jebruner.com/2016/06/geopolitical-hedging-as-a-service/ * How to make D3 maps with a forced layout http://mappinglondon.co.uk/2016/data-maps-with-force-layout/ * Comparing country sizes taking projection into account http://thetruesize.com Raf
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