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{audio}http://cpa.ds.npr.org/krcb/audio/2015/11/nbr_11-17-15__microbes_cleansing_winery_wastewater.mp3{/audio}
The bacteria that are being used in these tests may behave in some unusual ways, but they are naturally occurring and easy to find, says SSU Biology Professor Michael Cohen.
{audio}http://cpa.ds.npr.org/krcb/audio/2015/11/bacnat.mp3{/audio}
They are called "electrogenic" microbes due to a bio-chemical process through which they can create a small electric current. Cohen explains how that happens.
{audio}http://cpa.ds.npr.org/krcb/audio/2015/11/bacteria.mp3{/audio}
