These are some of the most polluted areas in America. CERCLAW was enacted in 1980, in response to the Love Canal disasterW, to clean up severely polluted sites.

This Your Superfund project is testing out a new trick – doing nearest-neighbor queries with UTFGrid.

RT @MapBox: Introducing Carto! Blog post by @kkaefer explains the CSS-like, fast map styling language #tilemill #map ...

indieprojector is great for learning about map projections