Access

News

Nature 446, 589 (5 April 2007) | doi:10.1038/446589a; Published online 4 April 2007

Car emissions are EPA's problem

Emma Marris

Top

Supreme Court affirms that greenhouse gases fall under the Clean Air Act.

In a major victory for environmentalists, the US Supreme Court this week ruled that the federal government must regulate carbon dioxide emitted from cars and trucks.In a strongly worded opinion issued on 2 April, the justices brushed aside insistence from the Environmental Protection Agency (EPA) that it did not have the authority under the Clean Air Act to regulate greenhouse-gas emissions from vehicles.