Define "healthy". Breathing toxic fumes on the roadways isn't healthy, and yet most of us prefer to live near civilization. You can't exclude one side of a tradeoff, you have to measure them against each other.
Define "healthy". Breathing toxic fumes on the roadways isn't healthy, and yet most of us prefer to live near civilization. You can't exclude one side of a tradeoff, you have to measure them against each other.