Radon is a dangerous gas that occurs naturally and can cause serious health problems, especially lung cancer when it builds up in homes. It’s important for homeowners and people looking to buy a house to know which homes are more likely to have high radon levels. Where You Live Matters Some areas have more radon than others because of what’s in the ground: High-risk places: Parts of the Northeast US, Appalachia, the Midwest, and some Rocky Mountain areas often have more radon. This is because the rocks and soil there…