Ron Patalano, director of operations at Roger Williams Park Zoo, has high praise for his staff. After all, it takes a mighty amount of shoveling to fill the two 30-yard Dumpsters of animal excrement that are hauled away weekly as part of the zoo’s recycling program.

 

Added to the grass clippings, vegetable scraps, animal bedding, hay and other natural materials trucked to Earth Care Farm in Charleston for composting, are 624 tons of manure produced annually by the zoo’s 280 inhabitants.

 

Keeping yards and buildings waste free “is not an easy job,” Patalano noted.

 

The zoo’s relationship with Earth Care Farm — Rhode Island’s longtime composting mecca — goes back at least 15 years, according to John Barth, the farm’s manager.

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Las plantas de energía de gas natural producen importantes cantidades de gases que provocan el calentamiento global. La sustitución de viejas plantas eléctricas a base de carbón con nuevas plantas de gas natural podría causar que el daño climático aumente en las próximas décadas, a menos que sus tasas de fugas de metano son muy bajas y las nuevas plantas de energía sean muy eficientes...

 

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Princeton University researchers have uncovered a previously unknown, and possibly substantial, source of the greenhouse gas methane to the Earth's atmosphere. After testing a sample of abandoned oil and natural gas wells in northwestern Pennsylvania, the researchers found that many of the old wells leaked substantial quantities of methane. 

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A systematic overview of more than 100 studies comparing organic and conventional farming finds that the crop yields of organic agriculture are higher than previously thought. The study, conducted by UC Berkeley researchers, also found that certain practices could further shrink the productivity gap between organic crops and conventional farming.

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Wind turbine developments have no effect on property values of nearby homes and farms, according to new research from the University of Guelph. Published in a recent issue of the Canadian Journal of Agricultural Economics, the study is believed the first peer-reviewed study on this issue in Canada.

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In the battle between native and invasive wetland plants, a new Duke University study finds climate change may tip the scales in favor of the invaders -- but it's going to be more a war of attrition than a frontal assault.

"Changing surface-water temperatures, rainfall patterns and river flows will likely give Japanese knotweed, hydrilla, honeysuckle, privet and other noxious invasive species an edge over less adaptable native species," said Neal E. Flanagan, visiting assistant professor at the Duke Wetland Center, who led the research. 

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