Ten of the world’s largest food production companies sent a letter to the U.S. Congress on Thursday, encouraging them to take action on climate change.

The letter was signed by the chief executive officers from Unilever, Mars, Kellogg, General Mills, Nestle, New Belgium Brewing, Ben & Jerry’s, Clif Bar, Stonyfield Farm, and Dannon.

“The challenge presented by climate change will require all of us – government, civil society and business – to do more with less. For companies like ours, that means producing more food on less land using fewer natural resources. If we don’t take action now, we risk not only today’s livelihoods, but those of future generations,” they wrote. “We are asking you to embrace the opportunity presented to you in Paris, and to come back with a sound agreement, properly financed, that can affect real change.”

Unilever spokesman Tom Langan pointed out that no one company can do this alone during an earlier round-table discussion in D.C.

“The reality is, Unilever can hit all its goals and it won’t make a difference, alone, in and of itself,” Langan said. “We need to work together. We need governments to be involved.”

For more on this, read the article from ThinkProgress titled: “Food Industry to Congress: We Need You to Act on Climate Change.”