A long winding road climbs into a gathering dusk, coming to an

abrupt dead end in front of a house. Here, a solitary flickering flame

casts out a warm glow, illuminated the nearby ridge line of the Malvern 【M1】__________

Hills.

Below the light sit a mysterious green contraption resembling a cross 【M2】__________

between a giant washing machine and a weather station. This is the

UK’s first dog poo-powered street lamp, and it is generating light in

most ways than one. 【M3】__________

The idea seems simple enough: dog walkers deposit the product of a

hearty walk into a hatch and turn a handle. The contents are then

broken by microorganisms in the anaerobic digester, producing methane 【M4】__________

to fuel the light, and fertiliser. Brian Harper, started work on the 【M5】__________

machine three years ago after becoming fed up of seeing plump little

bags hung in trees and on grass verges, reckons that 10 bags will power 【M6】__________

the light for two hours each evening.

“The gas light captures people’s imagination and shows it dog poo 【M7】__________

has a value,” says Harper, who developed the system with funding from

the Malvern Hills Area. “As a result, we get it off the ground, into a

receptacle, and produce something useful.” The next step is try to 【M8】__________

interest managers of urban parks in the technology.

Humans have used animal dung as fuel since the neolithic period,

and have known how to get nonflammable gas from decaying organic 【M9】__________

matter since the 17th century.Small-scale anaerobic digesters are

commonplace in many developing countries, while larger plants are 【M10】_________

producing heat and electricity from animal manure and human sewage

have long been used in the west.

【M10】