Farmers are already making changes to adjust to global warming. A researcher from Iowa State University meets with agriculture officials, including USDA Secretary Tom Vilsack, in Washington, D.C. Thursday. ISU Climate Science Program Director Dr. Gene Takle is briefing Vilsack and other officials on how to prepare and plan for global warming. He says climate change actually has some benefits for farmers, at least in the short-term. But he the greatest risk for the industry is unpredictability and wild fluctuations in weather patterns. Takle says both mitigation and adaptation are needed.