TECHNOLOGY FOCUS - BIOLOGY - Preferred Bacteria: The bacterium is derived from Clostridium autoethanogenum. The bacterium has the defining characteristics of Clostridium autoethanogenum strain deposited at DSMZ under the accession number DSM 19630.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The pure isolate of a bacterium is capable of producing ethanol and acetate by anaerobic fermentation in an aqueous culture medium supplied with a CO-containing substrate. The substrate comprises greater than 65 vol.% of CO; less than 20 vol.% of hydrogen (H2), or greater than 65 vol.% of CO and less than 20 vol.% of H2 (preferably at least 70 vol.% of CO, especially at least 75 vol.% of CO, particularly at least 90 vol.% of or at least 95 vol.% of CO). The substrate comprises less than 20 (preferably less than 15, especially less than 3, particularly less no H2) vol.%. The method of producing alcohol involves providing a substrate containing CO to a bioreactor containing a culture of bacterium; and anaerobically fermenting the culture in the bioreactor to produce the alcohols. The substrate contains CO that is a gaseous substrate containing CO. The gaseous substrate containing CO is a gas obtained as a by-product of an industrial process. The substrate comprises less than or equal to 20 (preferably less than or equal to 15, especially less than or equal to 10, particularly less than or equal to 5) vol.% of CO2. EXAMPLE - 1 l Media of anaerobic fermentation media in a 1 l continuous stirred tank reactor (CSTR) was inoculated with an actively growing Clostridium autoethanogenum (LBS1560) culture (DSMZ 19630) at a level of 5 vol./vol.%. A continuous flow of 70% of carbon monoxide (CO) and 15% of carbon dioxide (CO2), 1% of hydrogen (H2), 14% of nitrogen (N2) gas was introduced at the bottom of fermenter vessel through a diffusing sparger at a volumetric flow rate of 19 ml/minutes. The initial pH of the fermenter was set to 5.5 and the agitation speed was adjusted to 400 revolutions per minute (rpm). The acetic acid concentration of the culture was maintained below 4 g/l by a cell recycle and media exchange system. The cells were passed through a cross flow membrane, the filtrate was collected and the cells were returned to the reactor vessel. The filtrate was replaced with fresh media to ensure the medium volume inside the reactor remained constant. The culture was operated continuously for at least 14 days. The cell-recycle system removed 1-1.5 l of liquid nutrient media every 1-2 days without removing bacteria from the bioreactor. The removed media was replaced with fresh media, to maintain constant volume. The pH of the fermenter was increased from 5.6-6 over the first four days of the experiment. The rapid growth phase of acetogenic bacteria (such as Clostridium autoethanogenum) was typically associated with high acetate production in a controlled fermentation environment. Using the novel strain LBS1560, during the growth phase (day 0-3) the culture produced an average of 0.3 g/l/day acetate and 0.16 g/l/day ethanol. Following the growth phase (day 3-13) the culture produced an average of 1.03 g/l/day acetate and an average of 1.4 g/l/day ethanol. Over the alcohol production period total ethanol produced was 14 g/l. The results show a lower than expected level of acetate production and significantly higher ethanol production.