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Philadelphia Goes All In on Garbage Disposals

A trashy plan to create good gas.
relates to Philadelphia Goes All In on Garbage Disposals
Flickr/Dean Hochman

Between an in-sink garbage disposal and heaping food scraps into the trash, which is environmentally cleaner? The answer isn’t simple. Though disposals divert waste from methane-seeping landfills, they can also cause harmful organic matter to sneak into local waterways.

Done right, however, the pulverizing devices have one major ecological benefit: They can ensure food waste gets efficiently processed into biogas, a renewable energy that can be used for heat, electricity, and fuel.