Researchers at Stanford University want more greenhouse gases in their lives. Seem sadistic? Not at all. These scientists are looking at sludge from waste water treatment. The gooey mess contains bacteria that produce two greenhouse gases, methane and nitrous oxide. Encouraging their production will make it easier to remove the nitrogen from the nitrous oxide as well as promote the growth of methane that can be used for fuel. They hope that their project will help lower the costs of waste water treatment as well as increase energy production.

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