Producing clean energy from the inside part of a pipeline is being heralded as the latest way to help the environment.

Clean Energy from inside a Pipe? Hydropower Takes on a Brand New Form – U.S. Green Technology

Hydropower

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Biogas Industry Looks to Change Image, Add Jobs

As sustainability (mostly) continues to become more fashionable, the biogas industry is emerging as an important source of renewable energy, especially for rural areas.