The USDA found a case of mad cow disease in California.

Federal prosecutors charged a former BP engineer with deleting text messages in order to keep information about the true size of the Deepwater Horizon spill from investigators.

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The three cities with the most air pollution in the country are all in California, but L.A. only comes in third. A couple of inland metro areas come in first and second.

As often as the House tries to push through Keystone XL, Senate Majority Leader Harry Reid steps up to shoot the proposal down.

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In a new ad, the Obama super PAC brands Mitt Romney as the “$200 million man” who took millions from Big Oil. (Romney’s “in the [gas] tank” for Big Oil — get it?)