[RWebb]

Looks like you did most of the things in your last para. yourself.

My publications, lectures, and etc. are of course based on facts.

The bar for being an engineer appears in many cases to be frighteningly low. Not that I don't respect the ones I've worked with. You also conflate 'professors' with scientists who are also professors. Try not to make that mistake again.

If you have more insults, go ahead and post them.

If you'd like the simplest answer to the single substantive query you posted, which was about human causation, that is an easy one. Smallpox is not caused by humans but we still work to eradicate it. if that doesn't "work" for you, then see above re CO2 inputs, as I already answered it.

I'm glad to answer further posts if they are substantive, Matt.