That is mostly produced by the nitrogen in pig manure, and the team of scientists said they might one day be able to tackle that problem too.

BBC: GM pigs to produce cleaner manure

In this case, AgCert installs systems to collect methane from rotting pig manure in farms in Mexico, Chile and Brazil, then burns it off or uses it to generate electricity.

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Son is a third generation ethnic Korean who, according to the bio sketch, grew up amid the stench of pig manure and bootlegged sake in a Korean village in Saga prefecture on the southern island of Kyushu.

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