IELTS, ESP, EAP and CALL

Video. Cartographers at National Geographic discuss how they select an appropriate map projection for the September 2012 magazine map supplement.

There is no one perfect map projection that fits all circumstances and situations. Think a situation in which this map projection would be an ideal way to represent the Earth and another situation where it is an incredibly limited perspective. 

Tags: cartography, K12, geospatial, NationalGeographic, water. 

This interactive map documents where 443 million people around the world get there water (although the United States data is by far the most extensive).  Most people can't answer this question.  A recent poll by The Nature Conservancy discoverd that 77% of Americans (not on private well water) don't know where their water comes from, they just drink it.  This link has videos, infographics and suggestions to promote cleaner water.  This is also a fabulous example of an embedded map using ArcGIS Online to share geospatial data with a wider audience.  

Tags: GIS, water, fluvial, environment, ESRI, pollution, development, consumption, resources, mapping, environment depend, cartography, geospatial.