Agence France-Presse: A team of US scientists led by Purdue University unveiled an interactive Google Earth map on Thursday showing carbon dioxide emissions from fossil fuels across the United States. The high-resolution map, available at purdue.edu/eas/carbon/vulcan/GEarth, shows carbon dioxide emissions in metric tons in residential and commercial areas by state, county or per capita. Called “Vulcan” after the Roman god of fire, the project, which took three years to complete, quantifies carbon …