Is Biogas a net positive or negative?

In which we put anaerobic digesters on trial:

North Carolina’s Division of Air Quality wants to hear from people in Duplin and Sampson counties about a proposed biogas facility. It’s called Align RNG. It’s a partnership between Dominion Energy and Smithfield Foods. The project involves converting manure from 19 local hog farms into renewable energy.

“The methane product that is created, it gets inserted into this natural gas pipeline that’s then used for commercial and residential use,” said Zaynab Nasif, spokesperson for the NCDAQ.

This is one of those issues that has the environmental community split into opposing camps, with each side making some pretty solid arguments. I will endeavor to cover those equally, which means I'll probably piss everybody off. We'll start with taking a look at the science involved:

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