re: #1 Achilles Tang

You probably need to read the entire article. I’m not able to comment on the chemistry.

However, I can comment on the history—which is that of finding a practical use for the stuff that you don’t want. For instance, as England moved from trees to coal, since they were running out of trees, the byproduct of coal furnaces was coal tar. Mucky, awful stuff.

Now, Google the uses of coal tar to try to get a sense of its history. It started the chemical dye industry, has medicinal uses, was a crucial ingredient in the formation of waterproof material (the Macintosh, for instance), and so much more.

In other words, the overall concept is to find some use for greenhouse gasses. This would turn the issue into one of chemistry and engineering rather than an issue of politics. If you can do this, you can see the light at the end of the tunnel.