Kestas, I once described oil and coal as "old solar" energy and got promptly put in my place. Should I replace the coal my station burns with today's lawn clippings ?
They won't let us spread the accumulated selenium over our selenium depleted farmland.
IMO, algae are seriously worth considering...enough that I've bought some stocks affiliated with algae to diesel.
As an aside, currently looking at the effects of chloride pitting on 410 stainless...again.