海角大神

The United State Energy Department announced this week that carbon dioxide emissions resulting from energy production declined in the country in 2011, the third time in four years and fourth time in six years that this has been the case.

Unfortunately, the good news comes shrouded in its main source: the slowing down of the U.S. economy since the global recession began in 2008 and skyrocketing fuel prices in 2011, both factors that lead to less energy consumption by financial necessity.

The Energy Department measured a 2.4 percent drop in energy-related carbon dioxide emissions last year, most of it due to the slower economy than any 鈥済reen鈥� measures, though the department鈥檚 report did note that energy produced via natural gas increased by 3 percent, while energy produced from coal decreased by 6 percent.

鈥淣atural gas has approximately one-half the carbon of coal. Power generation from renewable sources also continued to rise, mostly because of record-breaking supplies of hydroelectricity and increasing generation from wind, solar and other renewable sources,鈥� said the Energy Department report.

It is also worth noting that last year鈥檚 drop came during a period of economic growth in the United States, with gross domestic product rising by 1.8 percent. A milder-than-usual winter in many parts of the country in 2011 was also a factor.

鈥淏ecause the decline in CO2 emissions occurred in a growing economy, the carbon intensity of the economy fell,鈥� the report continues. 鈥淭his was mainly a result of using less energy or, in some cases, using less carbon-intensive energy, to achieve the same economic output.鈥�

With a total measured carbon dioxide output of 5.47 billion metric tons in the United States last year, the country still has a long road ahead of it as it works to reduce its environmental footprint.

Source: U.S. Energy Related Carbon Emissions Declined in 4 of Last 6 years