[Myrddin]

and it stops the drop in the value of the US dollar

I don't buy it. The dollar is falling because the Fed is printing money at a furious pace and the government is spending money far in excess of income.

I didn't read the pdf, but I got the impression it could use almost anything with a biological origin.

Useless eaters? Biodiesel already has a line on a viable conversion of specific kinds of biological refuse. There are plants online. It's practical now, yet it hardly makes a dent in our energy demands.

[neverdem]

I don't buy it. The dollar is falling because the Fed is printing money at a furious pace and the government is spending money far in excess of income.

That's part of the problem, but oil is priced in U.S. dollars, IIRC. Everyone accumulating excess U.S. dollars overseas reduces their demand and value as a reserve currency.