Greenhouse|gas emissions by the United States greenhouse gas emissions by the United States Greenhouse gas emissions by the USA greenhouse gas emissions U.S greenhouse gas emissions Greenhouse gas emissions by the United States greenhouse gas emissions greenhouse gas emissions Greenhouse gas emissions by the United States second largest producer peaked in 2005 second largest producer greenhouse gas emissions by the United States second largest producer greenhouse gas emissions second largest producer halfway to the emission-reduction goals greenhouse gas emissions greenhouse gas emissions greenhouse gas emissions by the United States greenhouse gas emissions by the United States greenhouse gas emissions by the United States greenhouse gas emissions by the United States Wikipedia has some good charts too. greenhouse gas emissions by the United States second largest producer second largest producer greenhouse gas emissions by the United States greenhouse gas emissions by the United States largest emitter Wikipedia greenhouse gas emissions greenhouse gas emissions greenhouse gas emissions by the United States peaked in 2005 Greenhouse gas emissions by the United States greenhouse gas emissions Wikipedia