I'll be shocked if the conversion to generate less global warming is not very expensive. Probably it will be worth it, however.

I don't think this is the forum to ascertain the true costs - I already have heard from Barbara, who believes the US would wind up worse off than China, and you, who suspect the changes might be nearly free, neither of which passes the plausibility test.

As for DuPont turning green any time soon - what fraction of their profits comes from green products? This reminds me of the national lab initiatives to churn out industrially-useful research, a convenient label that only produces with extreme subsidies and far fewer spin-offs than projected.

A progress-minded administration and some accounting of costs and benefits, as I presume some Europeans have already done, are the groundwork necessary to move ahead.