At a dogpark in Cambridge, Massachusettes, Matthew Mazzota installed a gaslamp powered by methane generated from dog poop.

Burning the methane, which is 30 times more potent as a greenhouse gas than carbon dioxide, helps the environment, he said. And with dogs dropping tons of poop in cities everywhere, he thinks the idea of using its untapped power has broad appeal.

Broad appeal… FOR ME TO POOP ON!