Panelists on last Saturday's broadcast were David Roberts, who writes on energy and climate at Grist.org, and also Michael Mann, climatologist and author of "The Hockey Stick and the Climate Wars".
Interesting discussion! Check out the Video here.
Note: Advance the video slider to 10:22 minutes where the climate discussion begins.
Chris Hayes cites the EPA website on Greenhouse Gas Emissions: ghgdata.epa.gov There you can find locations and data on emission sources, such as those in Tonawanda, NY below: