[JumpCrisscross]

> Global warming and sulphur pollution are two separate (but realated) problems - it's possible that by making one worse you make the other better - and then it's a cost/benefit calculation

Sure. But I'd argue the case is being made for active cloud seeding. Versus random seeding with commercial vessels with sulphur.

Restoring sulphur in ship fuel would sap the mainline argument of a lot of strength. If the ships can have their sulphur back, why not every industry their [insert ask]. It won't be scientifically valid. But it would win a decade of inaction.