The present and future of ship emissions

Sharp-eyed ship watchers concerned about pollution noticed a ship traveling in the river yesterday, emitting what looked like smoke from its stack. As it turns out, seeing that was good news, since it shows the ship has an emissions scrubber on board, and what folks saw was mostly steam.

But that sighting opens the door to talk about recent international regulations that have reduced pollution in shipping, with plans for even more reductions by 2050.