EPA and CO2 regulation

In December, we reported on a court case in the US where it was questioned whether the US EPA has the “the authority to regulate CO2 and other greenhouse gases? Are carbon dioxide, methane, nitrous oxide and hydrofluorocarbons – air pollutants?”

The BBC reports that the supreme court of the US has ruled that the US EPA should regulate car pollution and that CO2 is a air pollutant.

The ruling says that unless the EPA can show that carbon dioxide is not involved in the warming seen around the world, the EPA should regulate it – and if it tries to make the case that CO2 is not involved, it would have a hard time winning it, our correspondent says.

Supreme Court Justice John Paul Stevens, giving the majority ruling, wrote that the EPA’s position was “arbitrary, capricious or otherwise not in accordance with the law”.

“Because greenhouse gases fit well within the Clean Air Act’s capacious definition of ‘air pollutant’, we hold that the EPA has the statutory authority to regulate the emission of such gases from new motor vehicles,” the court ruled.

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