electric dirt. seriously.

Well, technically it’s not the dirt that’s sending sparks, but it’s close enough.  Lebônê Solutions, a Massachusetts startup, has harnessed the power of microbes (ubiquitous in mud, cow manure and coffee crop residue) to power simple devices. The fuel cell, costing less than $10 and constructed of (mostly) readily available materials, can power an LED for several hours every night, and is targeted at rural African markets. Cheaper than a windmill and easier to set up than a solar panel, the microbial fuel cell has the potential to be a widely adopted, sustainable, and easily maintained source of energy for those who really need it. 

 

via Technology Review

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