Fox and News Corp. join Obama climate pledge

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President Obama is enlisting conservative media mogul Rupert Murdoch in his fight to combat climate change, with companies News Corporation and 21st Century Fox signing onto a White House pledge to cut emissions and support the president's push for a global climate deal in Paris.

Tuesday's announcement by the White House nearly doubles the number of businesses to sign the climate pledge since July, making News Corp. and Fox, of which Murdoch is the co-chairman, the latest to do so.

The 73 companies that signed the American Business Act on Climate Pledge have operations in all 50 states and represent $4.2 trillion in annual revenue, the White House said Tuesday.

It said the additional businesses — which also includes the likes of Honda, Amazon, MGM Resorts and coal mining giant Rio Tinto — make for a total of 154 companies joining the pledge to fight climate change since the summer. In doing so, the businesses also pledge to support Obama's goal of securing an international deal to cut global emissions with the United Nations this month in Paris.