It's really hard to be sarcastic in a way that doesn't come across as denial. I tend to avoid it for that reason.

I just saw a video that showed it's possible the pollution that cargo ships were emitting were actually seeding enough clouds to somewhat limit the sunlight that hit and warmed the ocean. This effect stopped recently when they were ordered to stop emitting so much of that pollution.

If it's true they were actually helping accidentally, we could spray ocean water and the salt could actually seed clouds in the same way.

If it works, it would be like a bandaid on climate change to keep the ocean temps a few degrees cooler for awhile.

They can limit their own greenhouse gas emissions, by doing things like subsidizing the conversion of homes which currently use fossil fuels for heating, hot water heating, and cooking to not do so, as well as subsidize solar panels on home roofs.

This won't lower temperatures from where they are now, but it does reduce the future increase.

Greenhouse gases added to the atmosphere are what is causing warming:

Spend money on avoiding the need to burn stuff to generate electricity, heat homes, heat water, or cook, and you can prevent them from being added to the atmosphere, preventing some of the increase in temperature.