In Massachusetts they are using a methane digester to turn dog poo into a fuel for powering a lamp in a park.
Solar cells seem a simpler alternative – or will we have something like this in Essex in a few years?
In Massachusetts they are using a methane digester to turn dog poo into a fuel for powering a lamp in a park.
Solar cells seem a simpler alternative – or will we have something like this in Essex in a few years?
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