Researchers look to solve food production challenges due to climate change Loss of topsoil, drought, wildfires and other issues are putting farms at risk. The effects could land on your table. and last updated 2021-05-04 11:22:47-04 YUMA, AZ â Researchers say climate change is posing significant challenges for farmers across the country and could have an impact on food production in years to come. Former Deputy Secretary and Chief Operating Officer for the U.S. Department of Agriculture Kathleen Merrigan says at the local level, drought and wildfires are the most significant threats to Arizona ranchers. âWe were trying to do soil samples to see how their soil is on their ranch and theyâre like, 'well you know, half of our ranch was destroyed by fire,'â she said. âWeâve had people severely impacted by that.â