Mongabay: In the past 150 years, the United States has emitted more greenhouse gas emissions than any other nation in the world, according to data by the World Resources Institute. In fact, US emissions account for 29 percent of the world’s total since the mid-1800s. The US emitted 328,264 million metric tons of carbon dioxide (MtCO2) in the past 150 years, which is over 3 times the amount emitted by China in the same century-and-a-half. The US also leads in per capita emissions. In 2005 the US …