81 companies sign WH climate change pledge

Eighty-one companies pledged their support to action on climate change and encouraged a strong climate change agreement at the United Nations conference in Paris Monday morning.

Among the companies pledging are investment giant Berkshire Hathaway, Bank of America, General Motors, Google, Monsanto, Walmart and McDonald's.

Through the American Business Act on Climate pledge, these companies are supporting an agreement from the U.N. Conference on Climate Change and agree to limit their emissions, increase low-carbon investments, deploy more clean energy and take other actions, said Brian Deese, senior adviser to President Obama.

"These are all actions that show the American private sector is stepping up and using its voice to show the importance of acting on climate," Deese said.

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