"How could such a destructive man [referring to Bush] be so popular with the American people?... Not only is he poisoning our air and water - he's poisoning our political system as well."

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Today, about 40 percent of America's carbon pollution comes from our power plants. There are no federal limits to the amount those plants can pump into the air. None. We limit the amount of toxic chemicals like mercury, and sulfur, and arsenic in our air and water, but power plants can dump as much carbon pollution into our atmosphere as they want. It's not smart, it's not right, it's not safe, and I determined it needs to stop.

— Barack Obama