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Eco-photos of the week: Oct. 10-16

A man disposes of dog poop into a methane digester that powers a nearby old-fashioned, gas-burning lamp post

Photo: ZUMA Press

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Poo-powered lamps

A man disposes of dog poop into a methane digester that powers a nearby old-fashioned, gas-burning lamp post.

Devised by Matthew Mazzotta — a graduate of the visual arts program at Massachusetts Institute of Technology in Cambridge, Mass. — these poo-powered lamps have recently been installed at a public dog park in Cambridge to the delight of local dog owners.