The temporary Park Spark Project was funded by MIT's Council for the Arts and the Cambridge Arts Council after artist Matthew Mazzotta came up with the idea, reported PhysOrg. The project, the very first Park Spark, was installed in a dog park in Cambridge, MA on a temporary basis. Dog owners were given special biodegradable bags to use, scooped after their dogs as they normally did, and popped the puppy poop into the methane digester. After cranking the wheel to stir things up, the pup and people-powered digester created and captured methane gas that powered a gas lamp in the dog park.
The Park Spark's Facebook page explains, saying
"Anywhere people are walking dogs can be a source of heat and light by introducing a Methane Digester into the equation. As long as people are walking dogs and throwing away dog waste, a flame can burn."