The GAO report warns that climate change is expanding the geographic range and duration of pest and disease outbreaks, leading to increased crop losses and higher pesticide use. Farmers and foresters are already experiencing significant challenges, including warmer winters that allow pests to thrive earlier and in greater numbers. In Maine, the southern pine beetle has extended its range, causing tree damage and increasing wildfire risks. Rising temperatures and extreme weather events are also disrupting growing seasons and damaging crops. Without immediate action, these risks could lead to higher federal crop insurance costs, estimated to increase by $300 million to $2.2 billion annually by 2100.