Even if you don’t live in an area prone to wildfires, your health may be threatened by smoke from fires raging in other parts of the country. New NRDC analysis shows that about two-thirds of the United States—nearly 212 million people—lived in counties affected by smoke conditions in 2011. And climate change will make matters worse: Hotter temperatures and longer dry seasons in summer create conditions that can lead to more frequent wildfires. Communities must protect themselves and vulnerable residents from escalating risks by planning for the health impacts of wildfire smoke in the face of a changing climate.