Quote:
Turning plant matter into liquid fuel or electricity is so inefficient that the approach is unlikely ever to supply a substantial fraction of global energy demand, the report found.
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I haven't read the report...yet; but at least this part is likely wrong.
Cool Planet may not have the answer but they show the way. 115octane gasoline is a byproduct of a process that produces
Terra Preta. I believe this is our best hope (along with seeding the oceans with iron) to sequester carbon from the atmosphere.