This map, produced for California Watch, shows the top 100 carbon dioxide-producing facilities in the state, according to data released by the California Air Resources Board. Power plants and oil refineries appear to be the largest culprits. I researched and mapped the individual facilities on a Google satellite image using Mapbuilder.net. I designed custom markers to visually show the amount of carbon dioxide emissions from each facility, and calculated conversions to demonstrate the scale and impact of those emissions.
See the interactive map on California Watch.