Cambridge
Imagine lighting city streets, neighborhood parks and sidewalks with the power of waste.
While energy from the sun and the wind is one eco-friendly method of providing power to street lamps, the three products listed below utilize what some may consider “unusual” technology to tackle two issues, waste and energy.
Doggy-Doo Powered Street Lamps
Using careful but easily understood criteria, the editorial team at the Mother Nature Network (MNN) has come up with their top ten "green" cities in the U.S..





