I see coal based fuels as just another fossil fuel source. Fine to exploit while it lasts but will eventually run out.
The link i just posted talks about a renewable long term solution:
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LS9 has created special genetically engineered yeast and E. Coli bacteria. These friendly microbes can take biowaste and weeds (instead of sugar) and use "previously undiscovered metabolic pathways" to convert the sugar components of cellulose into long chain hydrocarbons, resembling crude oil.
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