Cruise ship pollution and beyond - a look at effluent treatment and handling, at sea and on land.

A listener raised an issue about cruise ships and the pollution they create, so I thought I'd explore that topic today. As I was gathering info, I started looking at how sewage is treated both on land and at sea. Turns out, while wastewater treatment is a lifesaver, we are a planet filled with people, and that can be hard on our waterways, despite modern technology.