The region's coastal marshes are disappearing, making it even more vulnerable to storms like Katrina. Municipalities want to make the state’s biggest industry pay for the damage.
Some states are looking to prevent more derailments and spills, but the freight industry doesn't want more regulation.
Not that long ago, we hardly ever used or even knew the term. What changed?
The more water people save, the more money utilities lose. But new pricing models could change that.