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A plan laid out this week by the Obama administration to cut pollution from power plants already is facing stiff opposition, but for states like Maryland, which has already cut emissions considerably in recent years, holding other states accountable serves to level the playing field and increase the overall effectiveness of national pollution control efforts.

States that depend on high-polluting power plants already are raising alarms over the proposed pollution limits, which would seek to reduce carbon dioxide emissions by 30 percent by 2030 from 2005 levels. Fossil-fueled U.S. power plants account for about 6 percent of global carbon dioxide emissions, according to The Associated Press. In America, power plants account for 38 percent of annual greenhouse gas emissions, the AP reported. Scientists say greenhouse gas emissions are a big contributor to climate change.

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A Washington Post/ABC News poll out Monday showed that 57 percent of Republicans and 79 percent of Democrats support state-level limits on greenhouse gas emissions.

Maryland Department of the Environment spokeswoman Samantha Kappalman told the AP that it is unclear what the proposed reductions might mean to Maryland. "There is significant number-crunching that has to happen in order to give a precise determination of the 2030 EPA goal for Maryland," she wrote in an email to the AP.

That is because states like Maryland that have already worked to reduce emissions will get credit for the reductions seen in recent years.

Ultimately, we need to continue to find ways to reduce pollution, protect our national resources and preserve our planet for future generations. Whether you subscribe to the science indicating greenhouse gases contribute to climate change or attribute it to other factors, there is no denying that the quality of our air is deteriorating. We are just entering into the summer months, a time that, if history is any indication, will include several warnings for bad air days where people are cautioned to exercise care outside. Pollution from a variety of sources contributes to that.

The poll indicating a majority of people in the country see climate change and greenhouse gas emissions as an issue, and want to do something to resolve it, is a positive step, as are Obama's actions taken this week to get the ball rolling on reducing pollution across our nation.

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