"Poisoned Places: Toxic Air, Neglected Communities"
Two decades ago, Democrats and Republicans together sought to protect Americans from nearly 200 dangerous chemicals in the air they breathe. That goal remains unfulfilled.
Today, hundreds of communities are still exposed to the pollutants, which can cause cancer, birth defects and other serious health issues. A secret government 'watch list' underscores how much government knows about the threat – and how little it has done to address it.