"Life finds a way" - scientists discover bacteria that eat electrons
There are a number of bacteria species that can be made to effectively “excrete” electrons as a waste product under certain (anaerobic) conditions. This is being commercialized in applications such as “Microbial Fuel Cells” that can treat wastewater while generating electricity and fuel such as methane.
Researchers have recently discovered bacteria that skip the carbon step altogether and ingest and excrete electrons, no sugar required. Many potential applications for these creatures, including “nano on ramps” for electricity generated by their more conventional sugar-eating cousins.