Americans flush 350 billion kilowatt-hours of energy into the sewers each year. Cities are taking notice, and taking steps to install sewage heat recovery systems to capture the energy from the effluence.
Americans flush 350 billion kilowatt-hours of energy into the sewers each year. Cities are taking notice, and taking steps to install sewage heat recovery systems to capture the energy from the effluence.
Americans flush 350 billion kilowatt-hours of energy into the sewers each year. Cities are taking notice, and taking steps to install sewage heat recovery systems to capture the energy from the effluence.
The news of Osama bin Laden's death touched off an extraordinary effluence of emotion as crowds gathered to celebrate the demise of Al Qaeda’s leader and symbol.
The news of Osama bin Laden's death touched off an extraordinary effluence of emotion as crowds gathered to celebrate the demise of Al Qaeda’s leader and symbol.