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A recent report by Climate Central reveals that United States will not be able to continue declining the emissions at the 9% rate if there is no change in the consumption. Thanks to the recession, the carbon dioxide emissions in U.S. experienced a decline due to increased use of clean gas and decreased production of coal. Recession so far has been the most significant contributor to the decline of pollutants on the atmosphere of US. Since 2005, there has been a 9% decline in the emission each year without any change in the way the energy is being produced and used. However, this number will not remain the same once the country starts to grow again, reports Tucson News Now.

A paper recently published in the journal Nature Communications has got all the attention it deserves and intended. The authors of the paper presented the findings that are not attuned to the way this planet expanded. The authors of the paper called it the Drivers of US CO2 Emissions 1997-2003, and one of the authors told Climate News Story, "If we don't understand the factors that led to this emissions reduction, we won't know how to effectively reduce emissions in the future," says University of Maryland professor Klaus Hubacek, who is also an alumnus of IIASA's Young Scientists Summer Program. It is believed that even though the statement made is naïve, it is indeed accurate when it comes to assessing the situation. However, what if no one ever wants to talk about the most prominent reasons that led to the decline of the emissions in United States? The biggest factor that contributed to the decline of CO2 was waning economy, reported Eureka Alert. A study conducted between 1997 and 2007 revealed that 71% increase in the emissions was due to increased consumption of goods and services and the remainder is attributed to the population growth.