In addition to aiding digestion, it turns out saliva can also power batteries. Researchers at Binghamton University discovered this while inventing a small, paper-based battery that generates energy when mixed with a drop of saliva. The batteries, which are more like tiny microbial fuel cells, are inexpensive to make and could be used in natural disasters and remote settings where on-demand power is hard (if not impossible) to come by. As a result, access to medical care and screenings may improve...
from Inhabitat - Green Design, Innovation, Architecture, Green Building http://inhabitat.com/inexpensive-new-battery-generates-power-with-just-a-drop-of-saliva
via Inhabitat
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