A system maps outbreaks culled from Internet news sites.

Browse through these political maps to learn about this year's race for the Presidency and show off your favorites by embedding them around the web for the world to see.

Electric power production and transportation are the two largest sources of carbon emissions in the United States. But there are big differences in emissions between companies, and from state to state, that may make it harder to reach any agreement on cuts. Click on a sector below to view emissions by state.

shhh! don't tell anyone

The map above is a neat find by the Le Monde newspaper in France, originally created by the research firm Datamonitor. What it’s showing is the number of hours (in millions) users spend on social networks across five major worldwide regions, and which site reigns supreme within different countries.