A Big Rat in Congress Helped California Farmers in Their War Against Invasive Species

Climate change did not create the issue of invasive species. But shifting temperatures and changing environmental conditions are making the problem worse and pushing species into new areas of the state, said Daniel Sumner, director of the University of California Agricultural Issues Center.

“Both more uncertainty and the slowly evolving climates will make pest control more costly and complicated in most places,” he said.

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