When it comes to clean energy, we recognize powerful water dams or entire fields of wind turbines as influential sources, capable of harvesting the forces of nature to power our homes, cars, or electronics. Yet these large-scale structures are also an excuse to continue relying on fossil fuels and non-renewable sources, since cities or politicians will often claim they don’t have the infrastructure or money to set them up. […]
from The 3d printers source http://ift.tt/1QUdlTp
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